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23rd December 1939: Vera Zorina, the stage name of Eva Hartwig, the ballet dancer and actress, rehearsing with her husband George Balanchine for the Warner Brothers musical production of 'On Your Toes'. (Photo by Hulton Archive/Getty Images)

23rd December 1939:  Vera Zorina, the stage name of Eva Hartwig, the ballet dancer and actress, rehearsing with her husband George Balanchine for the Warner Brothers musical production of 'On Your Toes'.  (Photo by Hulton Archive/Getty Images)