Jane Birkin was synonymous with chic. Her effortless style and artistic legacy have been immortalized through her music and film career. And, of course, she was the inspiration behind one of the world’s most coveted bags, the Hermès Birkin. But who was the real woman behind the it girl? Now, Marisa Meltzer sheds new light on Birkin’s enigmatic life and explores her profound influence on generations in a rigorously reported biography unlike any other. IT GIRL paints a vivid portrait of Birkin and her profound legacy, from her early years in 1960s London to her rise as a beloved celebrity in France, detailing personal challenges, her relationships with creative powerhouses, and the duality of her public and private selves.

Marisa Meltzer began her first diet at the age of five. Growing up an indoors-loving child in Northern California, she learned from an early age that weight was the one part of her life she could neither change nor even really understand. Fast forward nearly four decades. Marisa comes across an obituary for Jean Nidetch, the Queens, New York housewife who founded Weight Watchers in 1963. Weaving Jean's incredible story as weight loss maven and pathbreaking entrepreneur with Marisa's own journey through Weight Watchers, she chronicles the deep parallels, and enduring frustrations, in each woman's decades-long efforts to lose weight and keep it off.