Even celebrities loves tennis; just ask Andy Roddick's supermodel wife Brooklyn Decker.

With the 2011 U.S. Open under way in New York, celebrities are joining thousands of tennis fans to watch the likes of Roger Federer, Novak Djokovic and the Williams sisters. Not even some serious rain delays could stop people like Kim Kardashian from catching a few sets in the Big Apple.

The tournament runs from Aug. 29 to Sept. 11, concluding with the Men's Singles Final match on Sunday.