(b Moscow 21 Apr. 1890; d New York, 11 Nov. 1973)
Russian-US dancer and teacher. She studied at the Imperial Theatre School, Moscow, graduating into the Bolshoi in 1906 where she was appointed ballerina in 1917. In 1918 she left Russia, and worked as choreographer for Nikita Baliev's Théâtre de Chauve-Souris in Paris (1920–1) as well as working in Berlin and Lisbon. In 1923 she moved to the US, staging Stravinsky's Les Noces at the New York Metropolitan Opera House in 1929. She also opened her own New York ballet studio where she taught from 1937 until her death, expounding her distinctive theories of placement in balance. Her pupils included Alicia Alonso.