Dear Princess Celestia, this is easy!

Join Twilight Sparkle and her friends as they easily defeat every challenge thrown at them with their awesome friendship powers.

Based on this story:
My Little Pony: Friendship is Overpowered (Equestria Girls)
My Little Pony: Friendship is Overpowered (Season 5)

Principal Celestia is sick of punishing Screwball and not seeing any improvement in her chaotic behavior. So she tries a different approach by enrolling her in the school's "Big Sister" program, hoping it will teach her some general morals. (No spoilers of who she's paired up with here.)

My first attempt at an Equestria Girls fic. Rated Teen for swearing and some sexual humor.

NOT CANON WITH MY OTHER SCREWBALL STORY!
I don't own the cover art!

In an alternate universe, where the Mane 6 are the Power Ponies, things seemed to have calmed down since they defeated the Mane-iac. But with news that a new threat is on the rise, stealing valuable treasures from museums and private collections from all over Maretropolis, The Power Ponies need to catch the thief! Can they catch this high class thief? or will some of Equestria's finest treasures be stolen from right under their noses ? Find out in this issue of Power Ponies: The Ebony Chronicles!
(I wasn't sure If I should've added Spike in the characters list, because i already added Power ponies)
*Character list and tags are subject to change as story goes

Several weeks after recovering her crown from Sunset Shimmer, Twilight Sparkle discovers she can communicate with her counterpart from the other world, who has finally arrived at Canterlot High. When Celestia theorizes that the portal can be re-opened, Twilight and her friends--as well as the OTHER Twilight and HER friends--decide to trade places, so they can learn more about each others' worlds. The only catch: neither party can return to their own world for a full thirty moons...

This story is now cancelled. Its concepts will (eventually) be retooled into (Mis)taken Identity.

Reality is a fickle thing, sometimes it just ignores the world of fiction while other times it comes down like a hammer on a nail. Let us go back to the Strange World of bipeds and of technology to see what Twilight and Spike did not see; how the world would react to their actions. How the world reacts to such actions that would remove the veil of safety and precedents... and how the government tries to cover it up.
This will include spoilers to Equestria Girls, in case the description didn't make it clear.
Rated Teen for general descriptions and references that may upset some.

Short prompt-based minifics from the MoonLight group. Snark and dark and moonlit romance ahead!

Individual authors linked at the top of each chapter.

If you'd like to contribute, check out the thread and follow the rules.

Rated Teen for potential sauciness.

It's Sisterhooves Social time again. This year, Dash catches wind of two new competitors and gets Spike to bet on the race. When her team is revealed to be a rather famous set of siblings, it looks like poor Spike will be her slave for a week! However, due to a team of masseurs, a minor invasion, unfortunate addictions, and dubious barrel components, victory might not be as near as she thinks...

Tartarus. A burning plane of existence made to punish the damned and evil. And ruling over this pit of hellfire is Hades, Lord of the Dead and God of the Underworld. And while torturing souls and abusing his two minions Pain and Panic are always good fun, he's grown bored. With his plans to rule Olympus and destroy Hercules down the tube, he needs a new aspiration in his un-life. And since he needs to buy some groceries, Ponyville seems like the perfect place to go shopping. And maybe make an ally or two for his newest plan to take over Olympus. If he doesn't burn them all to a crisp and steal their souls first.

Tired of Luna's constant nagging, Celestia agrees to give internet dating a try. Using the website www.notforeveralone.com, Luna helps Celestia go on dates with potential immortal suitors. Shouldn't be too hard to find true love, right?

You can make a suggestion for any immortal across any manner of genre or fiction for Celestia to date next. Just make sure they're immortal for it to work.

Updates every Tuesday and Friday.

Guest chapters for immortals I have not covered are welcome, since I won't be able to write about every suggestion someone has. Note that all guest chapters are non-canon from the main story, so there is a bit of leeway to them. Talk to me over PM's for any further discussion.

Thanks to my editors The Ponytrician and Garnot for all their help!

Cover art from the hilarious tumblr you all should check out, ~Letters For Celestia~

This story is a sequel to Apprentice Ship

Princess Celestia's life has been changed many times by Twilight Sparkle, and always for the better. From being Celestia's most successful protege, to returning her sister Luna to her, to saving Equestria from foes even Celestia could not face, Twilight has been a constant source of joy in her life.

So what happens when Twilight tells the very symbol of Equestrian beauty that she's fat?

Celestia panics, of course!