 After returning to France, he directed the successful "Koenigsmark" in 1923.His film "Madame Sans-Gêne" (1925), starring Gloria Swanson, was the first joint Franco-American film production.In addition, Léonce Perret collaborated with many of the French and American idols of his generation such as Abel Gance, Gloria Swanson, Gaby Morlay, René Cresté, Arletty, Suzanne Grandais, Mae Murray, and Huguette Duflos.