Principal Celestia has accidentally fallen through the mirror into Equestria, and it may be a bit before she can go home. Until then, she has to learn to cope with a strange world, in a strange body.

At the same time, Twilight has to figure out how she can help her new guest while keeping Equestria from freaking out over the presence of a second Celestia, and Sunset Shimmer has to figure out how she is going to make amends with those she had left behind in Equestria, while keeping an eye on her Principal.

Disclaimer: Since I wrote this description ages ago before I even knew the plot, the story is mostly pure comedy in the beginning, with eventual Sunlight and Chryslestia shipping!

Cover image by Arvaus, used with permission.

As a princess, Cadence is used to the slog that accompanies any fundraiser. It's not fun for anypony, but it is important. When it becomes clear that Twilight doesn't have the same issues, Cadence feels like she can enjoy herself a little.

Although that doesn't mean that she can't help some ponies out in her own little way.

Light. Fluffy. Shippy. And hopefully a little funny as well. Enjoy.

Luna feels dread, knowing even before her banishment, both her night and herself have never been appraised by ponies. This changes however, when she realizes that her sister's student has feelings for her AND her night. This story is sad, due to the dread that Luna feels throughout the entirety of it. However, it does have a happy ending!

It's also a LunaLight/whatever the shipping is called for Twilight and Luna

EDIT: Forgot the url to source, Silly me!
Here's the link: http://chio-kami.deviantart.com/art/Commission-Silent-Night-496508082

Twilight's dreams have been very odd lately. She's found herself wandering Canterlot Castle in the dead of night, unsure of why she's there or what could have brought her there. But all she knows is that each night the dream progresses even further, and each time she uncovers something more about the mysterious and hidden things inside of the castle. But the dreams leave her with more questions than answers.

What do these dreams mean? Why is there always the feeling of someone watching her? And what do they want with Twilight?

Started pre-Alicornization, continuing pre-Alicornization.
[Comments and critiques are greatly appreciated. ]

Shining Armor is a tooth. Really. Princess Luna says so.

With a reading that had once been done by Scarlett Blade, only now missing (darn).

And a review by Present Perfect.

This story is a sequel to Waiting For Perfect

Celestia and Twilight are getting married. It'll be the most wonderful day in either of their lives. If only there weren't all those trials Twilight had to complete... Whoops? Sorry about that, Twi!
Pre reading by Jumbled Thought, Adren, ZOMG and Shiny
Third place winner Seventh bimonthly Twilestia contest Contest

A sleeping Rarity mysteriously appears in her friends' beds, and nopony knows how or why. Her friends are determined to discover the truth behind Rarity's night-time snuggling spree.

This story is a sequel to Luna's Protégé

'Or through Midnight's Radiance, the Sun extracts obedience.'

Things are looking up for Sunset Shimmer.
She's been a proud student of Princess Luna for over twelve years, has the best friends a pony could ask for, a young dragon she cares for dearly, and ambitions on the cusp of completion.
And even better, it looks like everypony will be spending the Winter Solstice together! Assuming of course, that Celestia's return doesn't end up ruining everything...

Distant sequel to Luna's Protégé
Thanks to Cloureed again for the cover!
Set in the Trio-verse.

Live's well lived, friendships, rivalries and companionship; Twilight Sparkle has known many variations and forms of friendship, but what Twilight wants to know is 'Why me? Why did Celestia make me an Alicorn?'

The Answer is more surprising then she thinks.

Inspired by various FIM fiction pieces. A What-if this is the reason.

Something is bothering Celestia, enough to keep her up all night, every night. Enough to risk her screwing up, and revealing to all of Equestria what she is behind the facade of serene wisdom - a bizarre idiot. Thankfully Luna is on the case, determined to figure out what's going on with her sister, and help if she can, at least if they can stop bickering long enough to do that.

Possibly the dumbest Twilestia fic you'll ever read.

Sex tag is for sexually implicit dialog and situations.