Wonderful! It’s another frigid, frosty day where you wake up with your teeth chattering, the unbearable windchill is creeping through your drafty windows, and you regret your choice of wearing silk pajamas to bed. But fear no more, there is a better item to comfortably fall asleep in without the cold-cadaver effect: the onesie. Sure, you probably wore one as a tot, but these days the onesie is not just child’s play. Case-in-point: The one-step, slip-into onesie has been dotting the Instagram of celebrities for weeks. The look has been the travel necessity du jour for Khloe Kardashian, a snow bunny must-have for Beyoncé, and a picture-perfect piece for Ciara and her little one. One may be the loneliest number, but a onesie is definitely the coziest number in your closet. Here nine ways to get the sleepy chic look.