In 1932, Sylvia exposed the foibles of the Hollywood system and her illustrious clientele in the book Hollywood Undressed: Observations of Sylvia as Noted by Her Secretary (1931). It is a playful book, full of gossip and contemporary vernacular, and reveals intimate details of Sylvia's famous Hollywood clientele, which included Jean Harlow, Marie Dressler, Mae Murray, Alice White, Bebe Daniels, Mary Duncan, Ram̤n Novarro, Ruth Chatterton, Ann Harding, Norma Talmadge, Grace Moore, Constance Bennett, Gloria Swanson, Nella Webb, F.W. Murnau, Elsie Janis, Ernest Torrence, Lawrence Tibbett, Laura Hope Crews, Ronald Colman, Constance Cummings, Ina Claire, John Gilbert, Carmel Myers, Helen Twelvetrees, Carole Lombard, Ilka Chase, Dorothy Mackaill, Pepi Lederer, Marion Davies, Neil Hamilton, Alan Hale Sr and Vivienne Segal

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