In February, Margot Robbie will return as Harley Quinn in Birds of Prey, an all-female supervillain movie co-starring Ali Wong and Mary Elizabeth Winstead. The action film finally has a trailer ...

ET was with Robbie at the London premiere of her new movie. ET's Rachel Smith spoke with Mary Elizabeth Winstead at the London premiere of 'Birds of Prey,' in theaters Feb. 7. ET's Rachel Smith ...