Natacha Rambova (born Winifred Kimball Shaughnessy; January 19, 1897 – June 5, 1966) was an American film costume designer, set designer, and occasional actress who was active in Hollywood in the 1920s. In her later life, she abandoned design to pursue other interests, specifically Egyptology, a subject on which she became a published scholar in the 1950s.

Rambova was born into a prominent family in Salt Lake City who were members of The Church of Jesus Christ of Latter-day Saints. She was raised in San Francisco and educated in England before beginning her career as a dancer, performing under Russian ballet choreographer Theodore Kosloff in New York City. She relocated to Los Angeles at age 19, where she became an established costume designer for Hollywood film productions. It was there she became acquainted with actor Rudolph Valentino, with whom she had a two-year marriage from 1923 to 1925. Rambova's association with Valentino afforded her a widespread celebrity typically afforded to actors. Although they shared many interests such as art, poetry and spiritualism, his colleagues felt that she exercised too much control over his work and blamed her for several expensive career flops.

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