In February, Margot Robbie will return as Harley Quinn in Birds of Prey, an all-female ... It’s still early days for the movie, which isn’t set to premiere until 2020, but a teaser 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 ...