The website has an enticing offer: Send in one of the bridesmaid dresses sitting in the back of your closet and get a new little black dress that you might actually wear again. If the bridesmaid dress you send in isn't stained or torn, it will be broken down and recycled by the manufacturer Dessy Group, or donated to the charity Clothes4Souls. Of course, there's a catch. New York magazine notes that the new dresses aren't free. Even if you get a full 50% discount, they'll each cost around $100.