From Wikipedia, the free encyclopedia. William Ivey Long (born August 30, 1947) is an American costume designer for stage and film. His most notable work includes the Broadway shows The Producers, Hairspray, Nine, Crazy for You, Grey Gardens, Young Frankenstein, Cinderella, Bullets Over Broadway and On the Twentieth Century. Description above from the Wikipedia William Ivey Long licensed under CC-BY-SA, full list of contributors on Wikipedia.