Willis Marie Van Schaack (June 3, 1918 – January 29, 1999), known professionally as Lili St. Cyr, was a prominent American burlesque stripteaser.
St. Cyr was born in Minneapolis, Minnesota, on June 3, 1918. Her maternal half-sister, Rosemary Minsky (née Van Schaack; born 1924), was also a burlesque stripteaser; Minsky appeared on The Ellen DeGeneres Show in 2004. The sisters, and Barbara Moffett, were raised by their grandparents, the Klarquists.
Having taken ballet lessons throughout her youth, she began to dance professionally as a chorus line girl in Hollywood. Unlike other women who have stroke-of-luck stories about being plucked from the chorus line and selected for a feature role, St. Cyr had to beg her manager at the club to let her do a solo act. From her self-choreographed act she eventually landed a bit part at a club called the Music Box in San Francisco, with the Duncan Sisters. It was here that she found a dancer's salary was only a small fraction of what the featured star's salary was. The difference was that the featured star was nude.