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Margot will host the 42nd season premiere of popular TV show Saturday Night Live alongside musical guest star The Weeknd. TV broadcaster NBC announced the news on Thursday
The film is based on Dean N Jensen's 2013 book of the same name.
The new trailer showcases Will Smith as gunman Deadshot, Margot Robbie as the crazed and provocative Harley Quinn, Joel Kinnaman as soldier Rick Flag, Jay Hernandez as scarred villain El Diablo, Jai Courtney's Boomerang and Jared Leto's much-anticipated Joker