Chapter 1 and done
Twilight stepped towards the entrance of Applejack's barn, her large mammaries jiggling and sloshing about with the milk contained within them. Her plump behind likewise wobbling pleasantly with every step that she took, her voluptuous, having been the result of her friends not so willingly having their size drained from them. A part of her told her how it was wrong to take from her friends like that, but that part was swiftly silenced by the sensations she felt as her hand idly brushed against her newfound assfat as it moved to open the barn door.
A shudder ran through Twilight's body as she felt a jolt of pleasure from the touch, a soft gasp escaping her lips at the sensation. Yes! This was definitely the right choice to make, every part of her felt so good, so sexy and powerful...and it was only going to become moreso.
The Alicorn entered into the barn, and quickly stepped inside, closing the door behind her. The barn was illuminated by a few beams of light coming from some windows upon the ceiling. It was by no means a powerful source of light, but it was more than enough for Twilight to survey her catch. Before her, tied up against the back of the barn stood three mares both were bound securly by the hands in chains, which also acted as a nullifier for any magic that they might try to cast.
From left to right against the wall stood Tempest Shadow, Queen Chrysalis, and Princess Luna, all sporting massive melons that put Twilight's to shame. Where Twilight's hefty breasts rested just above her hips, Luna's mighty mammaries went well below hers, reaching halfway down to her knees, and she was the smallest of the mare's there. To the far left, Tempest's titanic tits made sure to outdo Luna's by having those pendulous orbs of breast flesh resting right down against her knees.
Resting may not be the aptest word to describe it though, as both her and Luna's breasts were fighting for space with the changeling queen in between them, Chrysalis's immense onyx bust heaving as it jostled with the two mare's beside her for room. It proved hard to gauge just how large her girls were from the constant movement, but a brief period where they settled into place showed that they were mere inches from resting upon the ground. Likely the queen would be resting upon them right now if it weren't for the chains keeping her firmly against the wall behind her.
Though Twilight was unsure as to which of them noticed her arrival first, it was definitely Luna that chose to spoke up first.
"Twilight! Thank goodness you're here! I can hardly recall what happened last night. All that remains in my mind is that there was a party you invited us to, and we'd been having fun and drinking and then everything started to go...dark. Then i find myself and Tempest waking up next to bugtits here, and she won't stop pressing up against us and growing bigger."
As if to validate Luna's words, Chrysalis chose that time to press her pendulous melons harder against Luna's, the princess of the moon's words running out and turning into stuttered gibberish accompanied by a furious blush upon her face. The Queen's bust swelling just that little bit closer towards touching the ground as she spoke.
"You may deny your feelings out loud, but I can still taste that some part of you deep down likes this. But if you're asking Twilight for aid, I fear your trust may be misplaced...she's the one who brought you two here to feed me, isn't that right 'princess of friendship'?"
Luna gasped at the accusation, though her shock began to change to some mix between fear and anger as she watched Twilight step forward with a smirk on her face, bringing her body into clear view of her captives, her movements carrying with them a bounce that she wasn't quite used to, but she certainly enjoyed.
"I'm sorry Luna, but Chrysalis is right. Yesterday night was wonderfully fun, but it was also a cover for something big that I've had planned for a long time. I've devoted years of studying to this, and it's finally payed off."
The purple alicorn gesuted to her voluptuous body, a hand running along her soft curves, giving her meaty rump a squeeze, her smile growing wider as she felt the pleasure of it once more.
"But after so long a time being small...I must admit, now that I've got it...i'm a bit greedy for more."
As Twilight finished her sentence, she walked towards Chrysalis purposefully, before pressing her bust up against the titanic tits of the changeling queen. Despite the newfound size she had acquired, her bust seemed absolutely pitiful in comparison to the changeling's mountainous mammaries. The queen responding with a hearty chuckle as she watched the purple mare.
"Ah, it seems that poor Twilight's fallen in love with my glorious royal girls. I can't say I blame you, a bit bigger and even moonbutt here will probably be fawning over them, and soon after that, every-"
The queen's speech cut off as she noticed the distinct lack of her breasts swelling from the presumably lust-filled mare, if anything, the exact opposite seemed to prove true. Her magnificent milk-jugs were slowly but surely dwindling in size before her very eyes, and a quick glance towards the mare pressed against them revealed why.
Twilight's horn was ablaze with magic, glowing fierce and bright upon her head, but that was not the most attention catching thing about her. Instead, the queen's eyes were drawn to the mare's rapidly growing breasts, for every inch of titflesh that the changeling queen lost, Twilights growing bosom was happy to fill the gap between them, pressing more and more against the shrinking onyx bust as there started to be more purple boob than there was black.
The queen shrieked in anguish as she attempted to wrap her hands around her breast, as if she could pull them towards her to let them escape the steadily growing wall of purple pony tit.
"N...no! Stop it! I worked hard to get all of that! You can't just take it from me! STOP!"
But the changeling queen's cries went either unheared of, or uncared for as Twilight proceeded to steal all that remained of the queen's breasts for herself, the purple alicorn's bust resting upon the floor as the pony attached to it moaned and pressed her body up against it, smothering the changeling for a few moments as she was smothered in between the purple titflesh.
"Oooooh yes! Now this is more like it! The bust of a queen, all to myself!"
And so quickly, Twilight's eyes turned towards Luna, the mare pulling her bust back from the wall with some difficulty and a lot of loud sloshing as milk started to fill up all the new space in her girls.
"And with the bust of the queen...i should be entitled to the bust of a princess as well."
Luna however, was no longer listening, somewhere between the shock of knowing Twilight betrayed her, the disgust at her greedy selfishness, and the anger at the whole situation she was stuck in, she had lost control. Luna was incapable of handling all of this, but Nightmare Moon was more than willing to step up to the challenge.
As Twilight took a careful, boob-wobbling stepped towards the restrained princess, the transformation took place. The moon princess's coat began to darken, going from the calm serene blue to an almost black shade that bespoke the anger held within the mare. The changing Alicorn's bust surged forward in size with a powerful roar of anger as the chains around her wrists shattered, unable to contain the magical might surging within her, the mare growing taller was well, to the point where her horn was in line with where the chains had been installed, but that was nothing compared to the change her bust had undergone.
From being the smallest of the three, restrained mare's, the change had rapidly taken her to a point where her bust was even larger than Twilight's was, not just in terms of raw size, but comparitive to Nightmare moon's considerably height as well, the huge mare's bust resting upon the ground, yet still rising up a good nine feet above it with their immensity. Nightmare Moon's horn erupted with the intense crackling of a devestatingly powerful spell.
Before she started to feel it ebb away, Twilight's bust surging in size even faster than it had before while Nightmare Moon's rapidly receeded in size. The growing purple alicorn letting out intermittent moans as she spoke.
"You really think youuuu~...could defeat me? I've absorbed the queen's power as wooooooh~....as well as her size. My friends were nothing compaaaaaah~...compared to draining her, and though draining you is even bettaaaaaaaah~...you're still nothing compared to me!"
Twilights gargantuan bosom swiftly overtook Nightmare Moon's in size, the enraged alicorn's attempts to fight back only hastening the transference of her incredible bosom to the purple mare. Soon enough, Nightmare moon's bust was taken from her completely, all her power consumed to feed Twilight's growing girls. But instead of being satiated, Twilight's hunger was growing.
The corrupted mare quickly found herself pressed back up against the wall by Twilight's growing bust, but instead of Twilight's attention moving away from her to someone else, she pressed her breasts harder against the pinned alicorn, the barn walls creaking ominously from the weight against them, Twilight's eyes filled with pure lust and greed as she gazed upon her vast mountains of breastflesh.
"I need MORE!"
The mare's horn flared once more as Nightmare again felt the odd sensation of losing her bosom, but isntead it was all over her. Nightmare Moon gradually sunk deeper and deeper into Twilight's cleavage as the purple alicorn's breasts surged with size, the purple mare's nipples alone were as large as a small adult, a fact that certainly didn't escape Twilight's booblust addeled mind as her greedy eyes affixed themselves to the still very busty Tempest, and the diminished queen Chrysalis.
"You are nothing but snacks for my girls now. But I'm not going to turn down a free meal for these beauties, no matter how small!"
With a massive thud that shook the foundations of the building, Twilight shifted her breasts towards the two, panic settled into both of them as they realized for a brief moment what was about to take place. Twilight pushed forwards her gigantic girls, nipples pressing right up against them and hungrily working to consume their prey. The drained Chrysalis barely put up a fight as she was quickly sucked up into the right breast, held in the massive milky prison to soon become more size for the titanic titted Twilight.
Tempest was a much different matter.
Tempests hefty breasts, despite being no match for Twilight's now, were nontheless still very large, and were proving just that bit too big to fight into Twilight's nipple. Initially, this was met with a huff of annoyance from Twilight, before she felt Tempest starting to struggle to escape.
A loud cry of pleasure rang out from the barn that day, loud enough to wake up her sleeping friends that had been resting in Applejack's house, first from actual exhaustion, then from the aftereffects of draining less powerful ponies. Applejack and Pinkie Pie were the first to shoot up out of bed, with Starlight Glimmer not far behind, but the rest of them were all jolted awake when they heard a loud crashing and what sounded almost like a gushing river.
The group quickly rushed out of the house to find the barn destroyed, milk covering the ground around them, and Twilight moaning and panting upon a pair of purple tits that were probably bigger than most of the houses in Ponyville. The probably was quickly upgraded to a definitely as the group just barely noticed a milk coated shadow-tempest dissapear into the mare's left nipple completely, which was soon followed by a surge of new titflesh.
Twilight's moaning started to calm down a bit as the struggling unicorn dissapeared into her breasts, the panicking that had pleasured her fading away, the Alicorn went to rub along her curvaceous hips, but found her hand reaching them much sooner. Though it had gone unnoticed to her with her bosom swelling so drastically, she had packed on some considerably ass mass as well, Her cutie marks now stretched across an ass that went down to her knees.
As the huge mare turned her attention to her hips, her eyes briefly roamed over her friends for a moment, before affixing to them, a wide smile crossing her face as hunger flashed in her eyes.
"Ah, good to see you girls. I'm getting hungry, and unless you can find me somepony else..."
Twilight patted her gigantic bosom proudly.
"Well...I trust you saw what happened to Tempest."