You’re a mouse, duh! You’ll be the cutest (and coziest) mouse at the party with the Comfy Mouse costume by Leg Avenue. This quick and easy Halloween costume doubles as a comfy onesie that you can lounge around in after Halloween. The ultra-soft plush velvet fabric of this fun Halloween costume will keep you comfy all night long, while the cheese zipper pull, mouse tail, and ear hood keep you looking adorable.