(b Moscow, 22 Sept. 1939)
Soviet dancer. She studied at the Leningrad Ballet School and graduated to the Kirov Ballet in 1958 where she danced until 1988. Her high leaps earned her the nickname ‘flying Sizova’ and the classical elegance of her style made her a natural Aurora which she danced in Sergeyev's 1964 film of The Sleeping Beauty. Though slightly overshadowed by ballerinas like Kolpakova she was one of the company's most popular ballerinas and created roles in Belsky's Leningrad Symphony (1961) and Sergeyev's Hamlet (1971). She was also Nureyev's preferred partner before he defected. After retiring she taught at the Leningrad (Vaganova) Ballet School. She was made People's Artist of the USSR in 1983.