Duong was introduced to Christian Lacroix, who was launching his couture house in Paris. She quickly became one of his favorite muses for his campaign and runway fashion shows. Around that time, Duong met Dolce & Gabbana in Milan, John Galliano in London, and Sybilla in Spain, and was in their first runway shows. She consistently walked for the world's top fashion designers for fashion weeks in New York, Milan, London, and Paris. They included Yohji Yamamoto, Moschino, Isaac Mizrahi, Christian Dior, Donna Karan, Karl Lagerfeld, and Geoffrey Beene.