New 33++ Cinderella 2015 Premiere Lily James. Downton abbey star lily james will go to the ball when she appears as disney's new we have a new trailer for cinderella, the new movie starring lily james, cate blanchett, richard madden and helen bonham carter. Staggs, disney co.'s recently appointed coo, was also on hand to fete the film's premiere. All eyes were on lily james at the cinderella premiere in los angeles.