Robert Coppola Schwartzman (born December 24, 1982) is an American filmmaker, director, screenwriter, actor and musician. Schwartzman is best known for directing Dreamland, The Unicorn, and The Argument, acting in his cousin Sofia Coppola's projects Lick the Star and The Virgin Suicides, as well as starring in The Princess Diaries and as the lead vocalist of the rock/pop band Rooney.