Twilight cast a spell and got herself turned into a filly. Luna has tricked Celestia into believing there is no cure, and now as Luna tries to 'find a cure' Celestia has to look after Twilight the Alicorn; filly version. And heaven knows Alicorns are not born often for a reason.

Traducción Española: https://www.deviantart.com/spaniard-kiwi/art/Potras-alicornio-de-alto-mantenimiento-y-tu-990270118

After a tragic accident, a human ends up in Lord Tirek's body, as part of an attempt to reform the villain after his recent escapades. While the hero of our tale is trying to make sense of his new surroundings, the rest of Equestria thinks that the most terrible threat that their world has ever seen is back...
And the powers that be are definitely not happy about it.
New Cover Art By Shadow Bolt

This story is a sequel to Past Sins

In the wake of the battle with Tirek, Twilight Sparkle becomes fixated on restoring Golden Oaks Library. After all, it was home for her little family of three. But as her attempts to repair the books and tree continuously fail, her friends must take matters into their own hooves. Discord, as the good friend he is, tosses Twilight and her extended family into an unexpected adventure while Twilight's other friends get to work on the new crystal palace.

All together, they'll do everything to ensure Twilight and her family have a place to call home when they reach the end of the road.

King Sombra’s dark influence was obliterated by the Crystal Heart, and the villain is well and truly dead. But when he attempts to steal the afterlife of an innocent victim, a human spirit is left hurtling towards Equestria, where this unfortunate soul is revived into the only vessel available: the reconstituted body of King Sombra himself.

Thus, a cheerfully oblivious alien is crammed into the form of the most evil and malicious being Equestria has ever known. Not that Shining Armor and Cadence know this, of course. As far as they are concerned, the King is back and he’s lost his fricking mind.

Click here for the TV Tropes page!

A living meteor has fallen, bringing the threat of Equestria's destruction. The Elements of Harmony have broken, following Rainbow Dash's ultimate sacrifice to protect her friends, and they scramble to solve the mystery while the world prepares for war. Moving forward is hard with Rainbow Dash dead.

But peace in the world beyond proves elusive to Rainbow, and she'll never let her friends down when they need her. Not even death will stop her from coming back.

Currently undergoing rewrites on a semi-regular basis, please check recent blogs or the 'current projects' module on my user page for details.

Editing for remastered version by Formerly Committed and Shellsh0cker.

Princess Celestia is a living legend, but much of her life is shrouded in mystery. Records have long since been lost to the decay of time, and the tale of her triumph over Discord has become a fable. The Princess's memory of the event has long since faded... or has it?

Her faithful student lending an eager ear, Celestia recounts the true story of a war-torn Equestria, the struggle against Discord, and the early years of her own life.

Before she was the Princess of the Sun, she was merely a stranger.

(Featured on Equestria Daily!)

A Cutie Mark is meant to represent the personality and special talent of each pony that has one. Cheerilee's flowers symbolize her desire to help her students bloom, and the smiles represent the cheer that she hopes to bring to their lives.

At least...that's what she tells everypony who asks.

[SEMI-SAD]

When Scootaloo moves to Ponyville, she meets a certain cyan pegasus who becomes her idol. Things go well until a pivotal event causes her hopes and dreams to come crashing down around her. Broken and betrayed, Scootaloo must learn to accept her reality and embrace her inner strength with the help of her father and two best friends.

[Now with a super awesome reading by Neighrator Pony.]
[This story's sequel can be found here.]

Humans.

Truth or myth? Ancient lost civilization or just an old pony's tale?

No pony has ever seen one, and most haven't even heard of them. But Lyra knows that these wonderful creatures are more than just old legends, and she's going to find out... and possibly drive her roommate insane in the process.

Prince Blueblood thought the Grand Galloping Gala was over. He thought he could just go to sleep and put it behind him. He never expected to be reliving the same disaster of a day, over and over... and over.

TV tropes page here:
http://tvtropes.org/pmwiki/pmwiki.php/FanFic/TheBestNightEver

Thanks to all the people who wrote the page and all the people who gave me a little wakeup call and comment to become aware of that fact! You can't see it, but you guys put a real smile on my face tonight.

Also, recently, extra thanks to RD Dash for giving TBNE a thorough editing. I've updated the fic accordingly (7.11.12)