Jeanne Lanvin, one of the great couturiers of the early twentieth century, gave up her careeer as a milliner when her clients began to demand copies of the dresses she had made for her younger sister and daughter. These youthful mother-and-daughter outfits made Lanvin famous. Her designs blurred the distinctions between women and young girls with fluid silhouette, flattering both a growing shape as well as one approaching middle age. Lanvin also created...