Clément had his first debut in 2005, with just sixteen years of age, for the Dior Homme show in Paris. Directly after that, he became the face of Jil Sander for several years, and started appearing in important fashion magazines like L´Officiel Hommes, Vogue Homme, Arena Homme, i-D Magazine, and V Man. Shortly after, he became the face of Roberto Cavalli, continued appearing in magazines and walking at significant shows. By 2011 he had achieved campaigns for Prada, Jil Sander and Salvatore Ferragamo. At his young age he is already an established model at the top of the fashion industry.