FEW MAKEUP LOOKS are as enduring, or as tricky to perfect, as the cat eye—that upturned bit of liner that extends past one’s peepers. The coquettish effect is ubiquitous, from runways (see Marni, Chanel) to the red carpet (Cardi B, Lady Gaga and Miley Cyrus all embraced the cat eye at the 2019 Grammys on Feb. 10). But no one has worn it quite like Brigitte Bardot, who was seldom photographed without her dark winged eyeliner after she broke out in the 1956 film, “And God Created Woman.” “She was a little bit of a feline,” said Peter Philips, the makeup maestro and creative and image director for Dior Makeup. “She wore...