DIY Monsters Inc Boo Costume. Who doesn't love the adorableness of Boo from Monsters Inc. This costume might look hard to make but it is an easy to make costume. Just follow the simple costume directions and your little one will be Boo from Monsters Inc in no time :)
Take a look at the coolest Monsters Inc costume ideas submitted to our annual Halloween Costume Contest. You'll also find the most amazing photo gallery of homemade costumes, how-to tips for making your own, and loads of Halloween party ideas.