 A former "Ford Supermodel of the World" runner-up, Du made her runway debut in Spring 2006, walking for prominent designers such as Valentino (opening and closing his bridal show), Jean-Paul Gaultier, Roberto Cavalli and Chanel.In 2005 Mario Testino photographed her for the cover of "Vogue Paris", along with Australian model Gemma Ward, becoming the first ever Asian cover-model.This led to a flurry of ad campaigns for Louis Vuitton, Roberto Cavalli, Gap, Swarovski, United Colors of Benetton, and Yves St. Laurent.