Equestrian Stories Book 1 Chapter 2
He converses with her and finds out her name is starlight glimmer and she was a pupil of princess twilight... yah that part dumbfounded him that twilight was now an alicorn princess! "you must've been gone for a long time to not know these things."
A life once lost...
"how long has it been since the two of you spoke princess?" twilight asked. the white alicorn mare walked over to the fireplace and looked up to the portrait which hung over it.
Welcome to Ponyville
Having risen several metres into the air to make herself more visible and more easily heard, a purple coated alicorn, the princess twilight sparkle, looked to her friends pleadingly.
[Commission]: Branded with Fire: the Tragedy and Justice of Fleur de Lis
That new princess, twilight sparkle, was going to destroy pony society by the end of the year. "you know, fleur, you should be careful with those statements. we don't need any more controversies on our hooves. things could get ugly pretty quickly."
Twilight and the Bee
princess twilight sighed with relief upon being freed but soon heard something else... the sound of _laughter_. she looked up and saw that it was three pegasi bullies, that usually taunted rainbow dash, floating above her. "hey, look!
The Bride's Broodmare
"p-princess...?" twilight exclaimed, taking an unconscious step closer to her mentor. "why are you-?" "you've done so well, my student. i want to thank you for helping keep equestria safe. but alas, i have nothing to offer you..."
CMC christmas decorators
These where, there was a message for the princess and spike isn't around, there is a crisis and we need the princess, twilight sparkle said it was okay to call you.
Strategy
"princess..." twilight's voice cracked. her face was neutral, meeting celestia's dead stare, but she sounded on the verge of tears. "i don't know how i got here.
Reflections 2
"morning, princess," twilight purred, rolling over to face celestia, peering up at her. celestia gave a warm smile. "good morning, twilight."
MLP-Sanrose- A New World #8
"what would be a perfect moment princess?" twilight asked. "my little ponies... i have been thinking for a while that we should send somepony to be an ambassador, to meet with the dragons so we could learn more about them.
Welcome to Equestria chapter 6
"it's from my testing and contact with the princess." twilight stated. "both of you have very much potential power, so i contacted princess celestia and asked if she knew of you two.
Easy as Pie (An MLP Jeeves Prompt; posted with permission)
An alicorn, almost certainly the princess twilight sparkle herself. the pony was clearly trying to solve the situation. to figure out a way to get everypony back under control and leave marble pie satisfied before the whole of ponyville flooded.