Justine Picardie paints a portrait of the enigmatic woman behind the designer Christian Dior: his beloved younger sister Catherine, who inspired his most famous perfume and shaped his vision of femininity. With unparalleled access to the Dior family homes and archives, Picardie's research into Catherine Dior's courageous life shines a new light on Christian Dior's legendary work, and reveals how his enchanting "New Look" emerged out of the shadows of his sister's suffering.