Last night (December 5), Margot attended the Los Angeles premiere of I, Tonya! Margot was looking dazzling in a Versace dress. Margot was joined by her cast members Sebastian Stan, Allison Janney, Caitlin Carver, and Julianne Nicholson. In addition, Margot was joined by the real Tonya Harding. Check out HQ photos from the premiere as well as the after party in the gallery!