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Robe de Style, 1927 (front view). Silk moire, glass beads, pearls, metallic thread by Jeanne Lanvin; worn by Mrs. Charles S. Dewey when presented at the Court of St. James in 1927 while her husband was Assistant Secretary of the United States Treasury Department. This type of dress, with its dropped waistline and full skirt, is known as a robe de style and is the most notable design of Jeanne Lanvin's career. (Photo by Chicago History Museum/Getty Images)

Robe de Style, 1927 (front view). Silk moire, glass beads, pearls, metallic thread by Jeanne Lanvin; worn by Mrs. Charles S. Dewey when presented at the Court of St. James in 1927 while her husband was Assistant Secretary of the United States Treasury Department. This type of dress, with its dropped waistline and full skirt, is known as a robe de style and is the most notable design of Jeanne Lanvin's career. (Photo by Chicago History Museum/Getty Images)