More great Ideas for Halloween Costumes and Costume Jewelry. A teddy is a form of Bodysuit-like Lingerie, often worn in the Boudoir. Unlike a Bodysuit, it is typically looser and more sheer, and may be designed to slip off from the shoulders, rather than to open at the crotch. The Teddy is normally worn for the seductive look, rather than practical reasons. Our Film Theatre Costume has Holloween Costume Ideas with witch Costume.