Keira Knightley chose a stunning and sheer black Elie Saab gown for her big TIFF premiere of Anna Karenina on Friday evening. She didn't pose with a date, but she did have her leading men Jude Law and Aaron Taylor-Johnson along for the big red-carpet event and after-party. Keira once again teamed up with her Atonement and Pride and Prejudice director Joe Wright for Anna, and she is again earning praise and award season buzz for her performance. In fact, the film got a standing ovation after the screening. Jude, Keira, Aaron, and the rest of their cast retreated to The Soho House to celebrate the occasion.