Margot Robbie is Reportedly in Talks to Appear in Quentin Tarantino's Next Film According to Deadline, Robbie has been in discussions to appear in 'Once Upon a Time in Hollywood' since July. The Oscar-nominated actress would join a budding all-star cast that includes Brad Pitt and Leonardo DiCaprio. Robbie has previously worked DiCaprio on Wolf in Wall Street, starring as his wife in the movie. 'Once Upon a Time in Hollywood' takes place in Los Angeles in 1969, around the time of Charles Manson's murder spree. The film is set to be released in August of 2019.