When Fluttershy borrows a Princess Celestia costume from Rarity, what begins as an innocent game of dress-up quickly turns into something far more private. However, it's always important to lock your door when engaging in licentious behavior, lest your friends come knocking...

Thanks to Ara for providing the inspirational cover art, and Midnight_Blaze and Alos88 for being the poor souls who volunteered to preread this.