Fluttershy: Butterfly-themed pajamas, with bunny slippers of course. Hasn’t had her coffee yet. There is murder in her eyes. Clearly not a morning pony.

Applejack: Sleeps in a simple nightgown. She always keeps her hat close by.

Rarity: Wears a nice fluffy robe with nice fluffy slippers. And, of course, hair curlers.

Pinkie Pie: Party-themed, adult-mare-sized footie pajamas. She absolutely loves pillow fights.

Twilight Sparkle: Has royal pajamas she received from Celestia. Snuggles up under a blanket with a good book. (I suck at drawing folds in fabric :()

Rainbow Dash: Sprawled out on a soft cloud in her Wonderbolts top and a pair of shorts, snoring loudly.