Ball gowns, plus size ball gowns from Sydney's Closet Wear a ball gown from Sydney's Closet if you want to be the perfect Prom Princess. A ball gown hides a heavy bottom and draws the eye up to a fitted bodice. Ballgowns with a dropped waist create the illusion of a slimmer shape. Look for a Prom gown with a lace-up back for an easy fit!