A group of noble stallions and mares all met each other at the front of the castle in the middle of the night. The ponies were all blushing as they stood and waited patiently, looking around while unsure of what to do or who they were meeting with. That was, until Discord appeared before them in a puff of smoke with a smirk on his face. "So it seems you all got my invitation, excellent! Are you going to accept my offer and become foals again?"
One mare gulped as she nervously responded. "Oh yes… we would love too."
"But we would like to have some dignity. We don't want to be turned into actual diapered foals, just school foals, ok?" One of the stallions responded as he went about fixing his bowtie.
Discord crossed his claws as he rolled his eyes and scoffed. "Heck no! Sorry, but I specifically said in the letter that you're going to be diapered foals. No ifs, ands or buts."
Another cautious stallion asked in a suspicious tone. "Did you get Twilight's approval for this ?"
"Of course not!" Discord laughed as he snapped a claw.
The nobles all slowly regressed in age, ending up as one year old foals. The fancy tuxedos the stallions wore slowly turned into onesies with button flaps, as thick diapers bloated between their legs as well making the colts all blush. Some squeaked as the button flaps snapped open with a loud pop!
The mares had their fancy gowns turned into a bright pink color as they became frilly and poofy, with extra petticoats, and thick diapers between their legs. They squeaked and blushed as they struggled to walk around in their foalish outfits.
The lord of chaos quickly scooped the foals into his claws and disappeared into Twilight's room. The princess was in a deep sleep, so the draconequus gently placed the foals near the mare and let them nuzzle into her as he placed the covers over them. Then the lord of chaos smiled down at them and snickered. "Have a nice final day, Twilight. You’re going to be in for quite a surprise." The mischievous draconequus then snapped a claw and disappeared in a cloud of smoke.
Twilight yawned as she slowly got up the next morning, wiped her eyes and squeaked at the familiar feeling of somepony suckling milk from her teats. She looked around, seeing many nobles in their foalish outfits, sleeping around her, snuggling into her mane or deep into her underbelly. Twilight grumbled under her breath as the regressed nobles were quite adorable, being chubby from foal fat while wearing their adorable clothes. She sniffed the air and gagged. "Oh dear, you all need changes. My milk went right through you." Her magic lit up as she began changing diapers. The mare then noticed a letter on the bed, she picked it up and read it out loud: "Dear Twilight,
A group of nobles love being babied by you last week and wanted to experience that again on your last day as princess, so I obliged their wishes. Have fun!
Discord"
Twilight rolled her eyes and scoffed. "Ugh, Discord! You just had to pile more work onto my plate on my last day, didn't you?" The mare then turned her attention to the regressed nobles as she finished powdering and strapped them in fresh diapers. "Well, looks like I don't have a choice. I'm going to have to care for all of you." She then laid back down on her side and adjusted the foals around her, making sure they were all nestled in her underbelly and let them continue to take turns suckling gently on her teats.
Celestia rose the sun that morning for the last time as a foal, grunting as it did take a lot out of her in her foalish state. She blushed as she poked her padding, making it squish as she realized this would be her last day as a foal. She turned to see Luna fast asleep under the blankets and suckling on a purple pacifier. Celestia smiled, seeing how relaxed her sister look. She knew deep down that they were going to miss being foals. She then turned to see Fleur coming back into the nursery with a smile on her face.
"Mowning, Cewestia, ya ready to be a big pony again?" Fleur asked.
Celstia blushed while she scrunched her padding and responded. "I guess. I gonna miss it, though."
Fleur chirped out with a smile. "Me too. Being cawed fow by Twiwight was a wot of fun...I awmost wana stay like tis, but my husband and I gots big pony tings we need to do. Though teaching him about ta potty is gweat pwactice fow when we do it with our own foaws."
Celestia agreed, bouncing up and down on her padding as she responded. "Yeah, Twiwy was wunning tings pwetty weww, but Wuwu and I stiww gots to be pwincesses. Twiwy can’t be a pwincess just yet."
"Ugh, Fweuw, ya changed my diapee again?!" Fancy Pants groaned as he woke up, poking his freshly changed diaper.
"Of course I did I not gonna leave ya in ya soggy padding, ya gonna get a wash," Fleur scoffed. “Not my fauwt ya dun know how to change yasewf when ya dun make it to the potty, Fancy Pamps.”
Fancy Pants grumbled as he got up and shook his freshly changed diaper about. "Ya know, when we become big ponies again, ya better not caww me Fancy Pamps anymowe."
"Of course not! Anything tat happened as foaws is a secwet," Fleur responded with a pout. “Though I might have to shawe some stuff if we have foaws of ouw own.”
Luna slowly got up and prodding her own soggy padding, making it squish between her legs. "Yeah, I agwee with tat. We aww gots to nevew eva say anything we did as foaws to othew ponies. Deaw?"
"Deaw!" Every foal shouted in agreement. Then their tummies all rumbled at the same time as Celestia giggled. “Wooks wike Twily is sweeping in, wets go get some hew milkies one more time!"
"Yeah!" The other foals all agreed as Celestia and Luna flew out from their cribs and followed Fleur and Fancy Pants to Twilight's room. They were quite surprised to see the other foals all nestled into Twilight's underbelly as she turned towards them.
The mare lit her horn and drifted the foals gently into her hooves as she hugged them together. "Aww, you all came to visit me on your last day as foals?” They nodded and nuzzled back. She then checked their paddings and started to change their diapers instinctively (except for Fancy Pants). Afterward, she cooed. “Since there's so many of you, I made bottles for each of you with my milk," She then popped said bottles into their mouths as the foals chugged away. Twilight continued. "Even though it's the last day, your nanny Discord decided to make things a bit harder and turned some nobles into foals. But there's something I need to do before I turn the reigns of the kingdom back to Celestia and Luna, so I have assigned Fancy Pamps to be in charge when I have other things going on."
Fleur pouted as she crossed her hooves and grumbled. "I shouwd be in chawge."
Fancy Pants hugged his wife and exclaimed. "Ya can be in chawge when we back to big ponies! Ya caused pwobwems ta wast time ya was in chawge," The princesses both grumbled under their breaths, also still angry about Fancy Pants being in charge of them. The rest of the nobles were then changed as Fancy Pants snickered. “Now we gots to pway some fun games with ta othew nobwes."
Fleur bounced up and down in excitement as she exclaimed. "Yeah, I can't wait! We going to have so much fun!"
Twilight then took the foals in her magic and teleported herself and all the foals, placing them in a playpen. Hours of changing diapers, playing and feeding ensued.
During that time, Fancy Pants made one more effort to try and use the potty before he returned to normal. His limited success so far had been with the princess training potties, and he wanted to try and conquer the great porcelain throne.
Fleur accompanied him, as she always did. Twilight was too busy with the other foals to take any notice.
The young couple reached the bathroom, and Fleur helped Fancy Pants clumsily remove his diaper before she sat him on the toilet with her magic. “Ya know, ya do wook weawwy cute in diapees, tough ya suwe ya dun wana be cawwed Fancy Pamps.”
“Onwy if I get wegwessed again ow someting,” Fancy Pants grumbled as he sat on the seat, waiting impatiently. “Is embawassing!”
Fleur just giggled, especially since she had more patience than Fancy Pants did. Time seemed to pass slowly, yet it seemed nothing would come out. Eventually, Fancy Pants gave up and prepared to climb down.
Fleur, being the naughty little filly she was, decided to mess with her husband by using her magic to flush the toilet unexpectedly! The loud roar of the flush cycle made her husband jump! Luckily, he managed to avoid slipping off the seat. And perhaps unintentionally, he peed a bit and watched it be flushed away.
Fancy Pants snorted as he climbed down afterwards and was wiped clean. “Ya didn’t have ta do tat! I couwd’ve gone down da howe!”
Fleur only stuck out her tongue. “Nu-uh, I’d have saved ya. Besides, it made ya go. Now wets wash ouw hooves and get back to Nana Twiwy. Weast now ya won’t have to get anothew diapee change.”
Twilight was loving her time with the foals on her final day. She made sure to take her time with each diaper change just to prolong the experience. But she eventually looked outside to see the sun setting, and looked at it longingly. It was quite late in the evening as she cooed. "Now, I want you to be on your best behavior I have some last-minute things I need to do before I turn things back over to the royal twins."
Fancy Pants lifted his hooves and declared quite bodly. "Tat means ya aww gots to wisten to me and do what I say! Aftew aww, I potty twained and none of yas awe."
Twilight smirked as she poked his padded rump. "Just don't go overboard, ok, Fancy Pamps? I’ve had just about enough chaos in this month to last a lifetime."
"Ok, Nana, I pwomise to be good." The colt responded, before blushing as Twilight put two diapers on him with extra foal powder as a protective measure. “You just look so adorable with that extra padding, you know that?”
He blushed, seeing that his waddle was more exaggerated. It spread his chubby legs out. “Yeah, you and my wife wowd powbabwy keep me in diapees fowevew if I wet ya,” The mare snickered as she briefly considered the idea of asking Discord to keep Fancy Pants as a foal. She then walked off as Fancy Pants turned to the other foals. "Now what ya wana do whiwe Twiwy’s gone?"
Celestia bounced up and down, getting quite excited as she shouted, Wwe needs a pwushie and piwwow fight! With aww tese foaws, is gonna be wots of fun!"
Luna nodded and responded in agreement. "Yeah! We do really need a bunch of pillows and plushies tough, and I dun see any.”
Then suddenly, from out of nowhere, a bunch of plushies, pillows, and strange foam toy guns appeared on top of the foals! The foals squeaked out in surprise as they just stared at the peculiar objects, but one noticeable thing was that half of them had Celestia's cutie mark on them while the other half had Luna's.
Luna picked up one and shot it at a noblem whose diaper suddenly had her cutie mark on it. She snickered as Celestia shot her gun at Fleur, making her wear a diaper with her cutie mark on it.
"It's time we settwe who ta best foaw is, Tia ow me! I've got ta Wuna nightie night pampews!" Luna exclaimed, grabbing a foam toy gun with her magic.
"Well, I gonna wead ta Daytime Diapees! Ya can't stop us!" Celestia snapped back.
Thus the foals were split into teams while Fancy Pants simply stood back and babbled. "I wun join any team. But I gonna say tat I wiww be ta wefewee: Now ta ruwes are ya stay hewe in this room, ya dun go upstairs or in ta kitchen, ya dun thwow anyting but pwushies and pwwlows ow use ta diapee guns. Deaw?"
"Deaw!" All the other foals exclaimed. They then split off across the throne room, commencing their plush and diaper fight. Celestia and Luna began constructed their forts of pillows while Fancy Pants sat down and sighed. "Weww, I hope tat aww tese foaws just keep temseweves busy whiwe Nana Twiwy is gone."
It was a long, drawn out battle, with plushie stuffing covering everything. Many of the foals were laughing and mostly batting each other with the plushies, or picking their noses. Some even went off playing or coloring, seeming to forget the whole battle. But Luna and Celestia were continuing to fight each other with plushies, slamming them over their heads as the princess of the sun shouted. "Yield! Ya can't beat me!"
"Oh yeah!? Ya can't stop me fwom takin' ovew and make ya aww take a nap!" Luna exclaimed.
They continued to whack each other with pillows, and then they smacked each other pretty hard in the face making the two alicorn foals to start to wail! It created a wave, and all the foals were knocked off away as Fancy Pants squealed in horror (he had looked away briefly when something had caught his attention, though now he couldn’t remember what it was)! He waddled over and exclaimed! "Hey, wha happened?!"
Celestia and Luna pointed a hoof at each other and whined. "She hit me too hawd with a piwwow."
Fancy Pants rolled his eyes. "Ya two say ya pwincesses, yet ya gettin' taken down by onwy a piwwow." The princesses glared at him as they took out their diaper guns and kept shooting at him, making him squeal as he was padded up with five or six diapers, each with suns and moons printed on the padding. All the extra diapers made him fall over onto his thick, padded rump, he and squeaked out as he felt himself pee in his first layer of padding.
Fleur, Celestia, and Luna all smirked as they went about taping him up in more diapers. And Fancy Pants shouted while kicking about in protest. "Hey, stop tat! What ya tink ya doing?!"
"We gonna make suweya aww diapeed up!" The fillies all exclaimed together.
Celestia nodded and exclaimed. "We gonna pwove ta Twilw ya too wittwe to be in chawge!"
"Yeah, one of us should be! We pwincesses!" Luna shouted in defiance.
Fancy Pants squeaked, realizing how terrible everything looked. "Ya thwee pwanned to mess with me and be in chawge?! Ya gonna be adwuts by tomowwow anyways, why ya doing tis!?"
Celestia crossed her hooves and plopped onto her padded rump as she scoffed. "Doesn't matttew, not gonna have Twiwy tink ya was ta best foaw!"
"Yeah! We pwincesses, and we gots to be ta best foaws! We was foaws fiwst!" Luna shouted back with a glare.
The colt rolled his eyes and grumbled. "Whatevew."
But just then, Twilight came down and gasped upon seeing all the plush fabric covering the throne room floor. "My goodness, what happened here?! It looks like a war zone!"'
Celestia and Luna flew over and exclaimed. "Tis is aww Fancy Pamps fawut! He twied to take ovew ‘cause he used the potty!"
Twilight turned to Fancy Pants, who was strapped in dozens of diapers and angrily suckling a pacifier. The mare smirked, she knew that only the princesses could have clearly caused all of this mess. Still, her magic was able to clean things up in a few moments and plop the foals in the playpen. She then took out the pacifier and asked. "Fancy Pamps, what really happened?"
"These two planned all tis to twy to make ya see tat I not good at being in chawge." The foal grumbled as he crossed his hooves.
Twilight shook her head and responded. "Fillies, come on, it's your last day! Don't mean to Fancy Pamps…" She then looked around, noticing a startling absence of little ones! "Where did the rest of the foals go?!” She cried out in concern.
All looked around and saw the door was open! Their mouths dropped in realization! All the noble foals had escaped out into the streets of Canterlot!
"Ok, Fancy Pamps, you stay here. We need to go find those foals before they hurt themselves. I’ll teleport them back here, and I’ll need you to keep them in the playpen." Twilight ordered.
Fancy Pants saluted the alicorn princess with a proud smile on his face. "Ya got it, Nanny Twiwy. I'ww make suwe noting bad happens."
Twilight nodded, then ran out into the streets of Canterlot with Celestia and Luna in a foal buggy (and Fleur on her back), shouting out for the foalfied nobles.
It didn’t take long to find the missing foals. As Twilight and the rest of her normal charges ran around the streets, they heard incoherent babbling and turned a corner to see a bunch of diapered foals waddling about the place, giggling and laughing while shooting their diaper guns at each other. Other nobles were padded up from the crossfire and regressing right in front of Twilight’s eyes! Their clothes turning into foalish outfits and thick diapers expanding around their rumps.
Twilight groaned, but then her motherly instincts kicked in, scooping up the foals, changing used diapers and plopping bottles filled with her milk into their mouths. "Oh, you're all so cute! But I need to stop this before it gets all out of hoof. I can’t take any more of this!"
After teleporting them back to the castle, Twilight continued through the streets she squeaked seeing some of the nobles had somehow constructed a diaper cannon! it shot out big balls made of diaper material, with foal powder filling the air. Twilight dodged the big ball trying to avoid being hit! "Stop it this instant, little ones!" She roared above the commotion!
The foals stopped As Twilight stomped over. But as she looked around Canterlot, she saw foals running around everywhere. "Discord is doing this, trying to make me lose the bet! I can't give up!" She realized.
"Oh, but it's too late. I told you things would get out of your control, and things finally did!" Discord proclaimed, suddenly appearing before her with his claws crossing his chest and a smirk on his face.
"You cheated! You gave them those diapers guns!" Twilight stomped a hoof on the ground, snapped back.
"Well, you seemed to have dealt with every other obstacle I threw at you,” Discord retorted. “I had to make the final day challenging somehow. You mean to tell me that the princess’ prized protege was brought down by a foal war?"
Twilight shouted back in determination. "The day isn't over yet, and I haven't conceded! I will get every noble that was regressed and have them again in the castle. They’ll all be fed, changed, and in bed with a bottle of milk in their mouths by midnight. You can be sure of that.”
"Fine, you have until midnight. If you fail, then every noble regressed today will remain a foal forever." Discord warned, then he snapped a claw as Celestia and Luna got up.
"We'ww hewp find ta foals and teww them to go to ta castwe, ya just wowwie about changing diapees and getting tem to bed." The regressed princesses replied.
Twilight hugged them. "Right, I have faith in you!" She gave the two a bottle of milk each and slipped a pair of foal booties on both of them. "Go find Cadence and have the toddler guards since they were already regressed. We’ll need all the help we can get.”
The princesses both nodded in agreement and exclaimed. "Wight!" They flew off straight to Cadence's house, and they both knocked as fast as they could until the princess of love came over and cooed. "Oh, hello you two! It’s about time you visited me.”
Luna shouted! "We dun gots time to talk! A bunch of nobwes gots tuwned to foaws and we gots to save Cantewot, and we need ta thwee guawds hewp!"
"Yeah, we can hewp!" The three guards all exclaimed in unison.
Cadence was unsure as she gave a deep sigh. "I think this is a big pony situation. Don’t forget, I foalsat Twilight a bunch."
The baby alicorns shook their heads and responded. "If ya come with us, ya might get tuwned to foaws too! Ta guawds awe foaws aweady so tey gonna be otay."
Shining came over and smiled at the foals. "I don’t see why not. Bright Wing’s taught them all what I taught him,” Then in his best captain voice he declared. “Alright, royal guards, you can go help round up the foalfied nobles but be back soon! I want to play with you three today. The best one of the trio gets first dibs on trying the big potty."
They all hugged Shining, who nuzzled them back. They then ran off following Celestia into the streets of Canterlot. Each of them determined to win the prize Shining Armor had set for them. They’d seen him and Cadence visit that big potty many times, and even for Cannon Feather it no longer looked as scary as it had once seemed.
The five foals went about gathering the foalified nobles, telling them the war between Celestia and Luna was over, and that Twilight was going to tuck them in.
All the while, Twilight did everything she’d vowed to do: Change diapers, feed the foals and place them in her bed. It wasn't long until over a hundred foals were now sleeping soundly in the nursery as more cribs appeared with each foal that came in.
Meanwhile Fleur and Fancy Pants did their best to entertain the foals that were too excited to fall asleep in the playpen in the throne room.
But it wasn't long until Celestia and Luna both returned, exhausted and panting from all the flying around they did while finding every foal. Twilight teared up, seeing them being quite worried as she rushed over and hugged them. "Oh, thank you for helping me."
Celestia and Luna looked down as Luna babbled. "Tis wouldn't have happened if we didn't stawt tat stupid fight. Ouw own chiwdwen had to hewp us."
"Yeah, we wiwwy sowie." Celesta cried out.
Twilight just hugged the foals and nuzzled both princesses. "It's ok, every foal is here safe and sound thanks to you...Did you find the toddler guards?"
The baby alicorns blushed as three foals enter the room, blushing while wearing thick diapers all with a mix of Celestia and Luna's cutie marks printed on them. Twilight laughed. "Don't worry Discord should be here to fix things soon."
Bright Wing boasted. “I won! Tat means Daddy gonna wet me twy his potty! I weady to tame that beast!”
Twilight just cooed. “Oh, that’s adorable. But be careful, with my brother you never know when a ‘potty monster’ will make an unexpected appearance. He’d tease me about it often, even though back then I knew from books there was no such thing. With Discord though, all bets are off.”
"Speaking of bets, I’m guessing you won mine," Discord grumbled as he poofed back in. "At least I have a full photo album of what happened. Memories to last a lifetime." Sure enough, he had a photo album depicting all the major foalish events of the month.
Twilight glared at the draconequus. "Well, since I won I think it's about time you turned all the foals back to normal. The ones that weren’t foals at the start of the month."
"Fine, but I think they look better as babies." Discord grumbled.
Luna giggled, as a funny thought entered her mind, and whispered to Celestia. "What if tey stay as foaws?"
Celestia snickered and whispered back. "I dun tink tat wouwd be so bad to be honest. Diapeed nobwes wouwd be supwew funny."
Twilight eyed the draconequus as Discord remarked with a scowl. "Well, much as I’d like the possibility of permanent foalified nobles, a deal's a deal." The lord of chaos then snapped a claw, and the castle reverted to how it was. The nobles instantly turned back into adults, but they were all in diapers still and asleep in the cribs, suckling pacifiers or bottles filled with milk.
The three foal guards were turned back into three-year-old toddlers, but they were now each wearing a thick diaper that read "Back to Square One" printed on the padding.
Fleur and Fancy Pants were turned back to normal, but Fancy Pants’ cutie mark was now a thick, fancy diaper with "Fancy Pamps" written on the padding.
Celestia and Luna were now adults again, but they were wearing pull-ups with "I'm a big princess now!" written on the seats of their padding.
Twilight was back to her normal unicorn form but she squeaked seeing her teats were still big. "Seriously, Discord?! I said ‘everything back to normal’!"
Discord crossed his claws. "Well, I think you cheated having those three toddlers helping you, so they get their potty training reset a little, though little Bright Wing can still claim his daddy’s reward if he’s feeling brave enough. Speaking of the potty, Celestia and Luna now can teach them about, being good examples, and whatnot. And as for you, those boobs will help you sustain two other foals."
“Wait, what do you mean two other foals? Don’t tell me you’re going to regress more ponies!” Twilight growled in protest.
“Oh you’ll find out soon enough.” Discord vaguely replied, and Twilight blushed, seeing the two mares she’d cared for a month standing over her. The two of them blushing and turning their heads unsure of what to say.
Discord sighed, "Well, that's it for now. I should head to Ponyville to fix up your friends and the Cake Twins."
Celestia and Luna both couldn't help it anymore and rushed over to Twilight, and they both embraced her in a giant hug and exclaimed. "Thanks, Nana! You were great!"
The princesses then squealed at what they said, making Twilight laugh. "That was adorable. And yeah, it was no issue I would care for you two again in a heartbeat, if I had to." She then came over to Discord, and he snapped a claw as they went to Ponyville.
Celestia and Luna teared up, missing their nanny already. But Celestia then squeaked out, feeling the familiar pang to use the bathroom. "Luna, I have to pee!"
"Me too!" Luna shouted as they flew off as the three toddlers blushed, feeling their padding squish, knowing they’d already peed their diapers.
Cannon Feather whimpered as he poked his squishy yellow-stained diaper. "Wooks wike we wost owa potty twaining."
“Wew, tatas otay, we can weawn fwom Mommy Tia and Auntie Wuwu on what to do. Wets go fowwow tem!” Bucket Bridle exclaimed!
“Gweat idea!” Bright Wing shouted. “We gots to huwwy though, tey way ahead of us!”
They all rushed off after the princesses, hoping to see how they use the big potty.
All Fancy Pants could do was just stand there, blushing while looking at his new cutie mark. “What does this even mean? I hope I don’t actually need diapers.” He blushed.
“We can find out together, Fancy Pamps!” Fleur teasingly replied as she took him by the hoof. “Come, why don’t we take you to the potty as well?” And she led her husband away before he could utter a syllable of protest.