At age 21, Yves Saint Laurent succeeded Christian Dior as the head designer of the House of Dior. The straight line of his creations, a softer version of Dior’s New Look, catapulted him to international stardom with what would later be known as the “trapeze dress.” In the 1960s and 1970s, the firm popularised fashion trends such as the beatnik look; safari jackets for men and women; tight trousers; tall, thigh-high boots; and arguably the most famous classic tuxedo suit for women in 1966, Le Smoking. The 1965 Mondrian collection was particularly renowned. Saint Laurent also started mainstreaming the idea of wearing silhouettes from the 1920s, 1930s and 1940s.