Mischa Barton – St. Trinian’s (2007)

Having been born and raised in London until she was six, Mischa Barton has little excuse as to why she can't deliver an English accent. Lacking consistency when she speaks, it's hard to pinpoint what accent she was actually going for. Slipping between British English, American, and even Scottish sometimes, you get the feeling that she had no sense of direction when playing JJ French, leaving audiences confused as to what accent she was going for.