 His wife's development of stretch pants in the early 1950s led to their adoption by such celebrities as Marilyn Monroe, Jayne Mansfield, and Ingrid Bergman and contributed to the prosperity of the firm.His son, Willy Bogner Jr. (born 1942), was a successful alpine skier in the late 1950s and 1960s who competed for Germany at the 1960 Winter Olympics in Squaw Valley and the 1964 Winter Olympics in Innsbruck.Bogner Jr. would later go into filmmaking in 1967, then follow into Bogner Sr.'s footsteps and start his own ski collection in 1971.