This story is an Alternate turn of events from the Episode Brotherhooves Social

Applejack was called away once more to go on another epic adventure with Twilight. However, Big Mac is once again left behind, except...this time, the Sisterhooves Social is coming up, and Apple Bloom is without a sister to compete with. That is until Big Mac decides to recruit Zecora into brewing a gender-swapping potion and Rarity to help him act like a mare. Big Mac is then transformed into Auntie Orchard Blossom, a plump, happy mare who visits Ponyville for three days to compete in the Sisterhooves Social. But during her short visit, she must keep her true identity hidden from the judges and also from Apple Bloom.

Twilight and her five friends are transported during a botched spell, across dimensions to... Ponyville, Equestria? But not the same one that they knew. Sitting on a bench is Harpsy and Babar. The Doctoress avoids apples from an aspiring Applebuck. And in a library across town, six stallions join their forces as they try to decipher the appearance of filly look-alikes of themselves around Ponyville!

While in the human world, on a date with Sunset, Twilight discovers a badly injured child that she recognizes a little too well with a newborn baby. Taking them to a hospital, they discovers more about the children and decide to take them to Equestria to help them out.

Nyx is from Past Sins, read it here:http://www.fimfiction.net/story/41596/past-sins
Gore tag for chapter 4.

Celestia is the fun loving principal of Canterlot High... where everything is normal. At least it was until this school year started up. Suddenly she has to deal with two new students, one with issues, one with anxiety, figuring out how to convince her students to be school proud and not clique proud, oh...and figuring out a new drill to do whenever a villain attacks too close to the school. Did I mention she also has to deal with the random appearances of the seven new superheroes? Yeah... this school year is definitely one for the history books.

Twilight finally finished Starswirl’s spell and ascended into an alicorn, she also became pregnant with the foal of her five best friends.

Story begins immediately after Twilight becomes an alicorn.

Mark Wells was a klutz, but even he could not imagine stumbling into a mirror that he had just bought at an antique store and ending up in a world of colorful equines, not to mention gaining hooves and wings at the same time. And whoever heard of green fur on a horse? Perhaps the great and powerful Princess that the guard was taking him to would have some answers because he sure didn't!

An alternative version of canon events with humorous twists. Written in collaboration with Airy Words.

Cover art by Mix-up and their DeviantArt account is Amalgamzaku.

Book One: Chapters 1–33
Book Two: "Further Off The Mark": Chapters 34–69
Book Three: "On The Mark": Chapters 70–100

Sex tag added as of chapter 32 but it's mostly due to talk. Actual sex takes place "off camera".

Sunburst was the official crystaler. It was his job to help care for the young princess, and he had grown used to and even enjoyed the task. It was a pity, if one asked Flurry Heart, that he lacked a little trait that'd make him the best foalsitter.

Spoiler Traits: TG/Transgender

Mark your calendars for the Sadie Hoofkins Dance! Silver Spoon dares Diamond Tiara to take Snips, and the stakes are high. She must accept, or she won’t be invited to Silver Spoon’s birthday party. The daughter of Filthy Rich, however, develops secret feelings for the little unicorn. Can Diamond Tiara preserve her image as the Princess of Privilege while courting Snips, the Pauper of Ponyville?

Author's note: This story has eleven chapters, and three non-bronies proofread and edited each one. Updates every Friday.

Rainbow Dash's morning was pretty much ruined.
She tripped getting out of bed and landed flat on her face, giving herself an aching muzzle.
She forgot to buy her favorite brand of hay flakes at the store yesterday and had to eat plain toast for breakfast.
She found out she had to pull double-duty today and tomorrow on the weather patrol.
Oh, and she found a nearly-dead foal, broken and bleeding at the edge of Ponyville.

The rest of her day became a whirlpool of stress and worry but the colt woke up, thank Celestia.
Something's not right, though. Nopony can find his parents, he's not in the registers, and there's an unsettling look in his eye...

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YouTube reading by Fire Hearth

Chinese Translation by forgivenlove

Russian Translation by Likantrop

TV Tropes page, if you're interested in that sort of thing.

The summer season was just about over at Stella Lacus adventure summer camp. Amie and her younger brother Wes were eager to return home. Unfortunately for them, their adventures had only just begun.

All at once, the entire summer camp and the mountain it was built upon shifted universes, leaving Earth behind for a far stranger world. In the same moment, every camper, counselor, and staff-member transformed into strange insectoid creatures, with unknown powers and incomprehensible needs.

Instead of returning to nursing school, Amie has a new goal: keep her little brother alive. If only the other campers didn't look at him like food...

Updates every Saturday. Editing by Two Bit and Sparktail.

Awesome cover by SimonDrawsStuff.

This story was sponsored by Canary in the Coal Mine on my Patreon. Thanks so much for your support!