It has been announced that contentious Hollywood film star Lindsay Lohan will make both her theatrical and West End debut in David Mamet's Speed-the-Plow in November at London's Playhouse Theatre. She takes on the role of Karen, formerly portrayed by Madonna and Elisabeth Moss in the show's past Broadway incarnations. The intriguing news inspired TheaterMania to dig through Lohan's career for hints of an aspiring thespian. We landed on this popular clip of the actress from the cult hit Mean Girls where she shows signs of potential triple-threatdom. If this London run goes well, maybe this teenage drama queen will be the next Hollywood star to grace the Great White Way.