In "Just For Sidekicks" as the Mane Six are boarding the train back to Ponyville, the order is, Fluttershy, Rarity, Rainbow, Pinkie, Applejack, Twilight. In this episode, Twilight and Pinkie have swapped places.
While Rarity is looking around the salon as Twilight and Cadance meet up, her horn projects an aura for a single frame.