From 'Magical Mystery Cure' of My Little Pony: Friendship Is Magic.
A nice capture of Alicorn Twilight prancing with her friends and a split second blink and you've missed it Muffin Queen entry by Derpy Hooves.
Sure it may seemed rush, but they have a lot of past scenes play in the eyes of the ponies as well as in the cosmos when Twilight finally takes up her mantle as an alicorn.
I bet Cadance still holds the record for youngest princess ever to come about. It took a while for Twilight to get her epiphany, I guess epiphanies are how you make alicorns.
The entire musical thing did kind of drag on, but I liked Celestia getting a singing role.