Sebastian Stan and Allison Janney Join Margot Robbie in Tonya Harding Biopic Posted on 16/12/2016 by affam In addition to playing Harley Quinn in the upcoming DC project Gotham City Sirens, Margot is also set to play the U.S. figure skater Tonya Harding in the biopic I, Tonya based on the 1994 U.S. Figure...