Audrey Hepburn and Yves Saint Laurent attend an exhibition at the Galliera Museum to celebrate the 40 years of fashion house Givenchy. (Photo by John van Hasselt/Sygma via Getty Images)

Audrey Hepburn and Yves Saint Laurent attend an exhibition at the Galliera Museum to celebrate the 40 years of fashion house Givenchy. (Photo by John van Hasselt/Sygma via Getty Images)