With her straight bangs, calm stare and gapped teeth, the woman for whom the famed Hermès Birkin bag was named embodied the cool nonchalance of mod London and yeh-yeh Paris in the 1960s and '70s. She was a languid presence in influential movies of the era, from Antonioni's Blow-Up to Grimblat's Slogan, on the set of which she met her most important collaborator, future husband Serge Gainsbourg. Their union yielded one of the era's sexiest songs, "Je T'Aime Moi Non Plus"; a style icon for the next generation, their daughter Charlotte Gainsbourg; and perhaps a glimmer of hope among odd-looking artistic boys everywhere that they too could someday seduce the prettiest girl in school.