While she was a ballet dancer in Paris, Duong was discovered by photographer David Seidner. He launched her career as a fashion model by featuring her with Tina Chow in the Yves Saint Laurent campaign for "Vogue". During her first years as an international fashion model, she appeared in several fashion campaigns for designers such as Emanuel Ungaro and Sybilla, for which she was photographed by Deborah Turbeville and Javier Vallhonrat. She then was featured in numerous editorials including "Vogue" (Italian, American, French, German and British), "Harper's Bazaar", and "Elle".