Redford defends commercialism at Sundance festivals

Veteran actor Robert Redford has defended allegations his Sundance Film Festival has become "too commercial" - insisting he cannot control party girls like Paris Hilton from attending.

The 71-year-old became involved with the festival in 1981 to help bring exposure to the work of independent filmmakers - but in recent years, it has become more well-known for the famous faces its parties attract.