There are at least four artists that use the name "Vanity." 1. Denise Katrina Matthews (born January 4, 1959), better known as Vanity but sometimes credited as Denise Matthews-Smith or D.D. Winters, is a Canadian-born singer, songwriter, dancer, actress, model, and full-time preacher. She was the lead singer for the Prince-mentored female trio Vanity 6, which recorded the 1982 R&B hit "Nasty Girl".