My Little Pony: Friendship is Magic - The bitterness of mortality

… or maybe she will age like Cadance and will die like everyone else. HAPPYNESS (?)!!

@Necro910
This image?

They're considered a Copy&Paste animation error. The scene artist just copied, recolored, and threw on some horns to make them look more varied. Cadance, Luna, and Celestia are the only confirmed alicorns in the show so far.