C is for cookie, and C is also for costume! The Adult Sesame Street Cookie Monster Costume. This costume, resembling the ever classic and beloved character off of Sesame Street, includes a plush, blue, long sleeved shirt that represents Cookie Monster's blue fur. This is an extremely comfortable top that is complimented by the headpiece that is included. The headpiece goes over your head and is also a plush blue with a face hole coming from the large gaping mouth. The two eyes show off Cookie Monster's famous large, white, crossed eyes. Cookie Monster is without a doubt one of the most popular Sesame Street characters. Wear this to a Muppet's theme party and eat all of the snacks that are left out. Me like cookies, and me also like this great Cookie Monster costume.