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In page Natalia Goncharova:

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She also designed many costumes for the Ballets Russes, most notably for the company's production of The Golden Cockerel[citation needed] (Le Coq d'Or) and The Firebird. She was a key member of the Ballets Russes and worked closely with Sergei Diaghilev and Bronislava Nijinska. Her work had a major influence on French fashion at the time, particularly with legendary designer Paul Poiret.