It's called "wardrobing." You buy an expensive set of duds for a party and then return it the next day and get your money back. Sure, if the return has obviously been used a retailer can refuse to refund it but retailers don't like that conversation. But they are learning to disrobe the $8.8 billion per year scam. Bloomingdales puts three-inch black plastic tags on dresses over $150. The clothes can be tried on at home without disturbing the special tag. But once a customer snaps it off to wear in public, the garment can't be returned.