It’s the alternate season 3 ending!
Celestia: What I learned today about friendship is… Uh, well… That doesn’t matter. You pass. You pass!
Twilight: Princess Celestia, I don’t feel like I really did anything.
Celestia: That’s how being a princess is supposed to feel.
Celestia: Besides, here’s your princess license.
Twilight: My license! It tastes just like I dreamt it would.
AND THAT’S HOW TWILIGHT BECAME A PRINCESS.