Well, okay, we'll give her the benefit of the doubt and assume that she was just being sarcastic when the former O.C. starlet made her caustic comment. Don't forget, she's been spending some time in London lately filming the St. Trinian's update, so it wouldn't be too surprising to see her pick up some of that famously dry British humor. Still - that's not much of a "Cannes-do" attitude, Mischa!