The forthcoming Tonya Harding biopic 'I, Tonya' has reportedly added 'Captain America: Civil War' star Sebastian Stan to its cast. In the movie, Stan will portray Jeff Gillooly - the ex-husband of Harding, who will be played by Margot Robbie. The film will center on the true story of Harding, her husband and their plot to attack her rival Nancy Kerrigan before the US Figure Skating Championships in 1994.