George Clooney is so convinced his girlfriend SARAH LARSON has what it takes to be a Hollywood star, he's asked his director friend Steven Soderbergh to cast her in his upcoming movie. Clooney has been dating former waitress Larson since last summer (07) and is certain she is good-looking and talented enough to enjoy success as an actress. Although Clooney doesn't want to co-star in a film with someone he's romantically involved with, he's asked his Ocean's Eleven director friend Soderbergh if he can cast her in his next movie, Garland Bunting Project. An insider tells U.S. magazine In Touch Weekly, "George thinks Sarah could be a huge star. That's why he's helping her with her career."