Tennis, anyone? The worlds of fashion, sport and showbiz will converge at this month's U.S. Open.(HOLDING COURT)

Tennis is a classic American pastime now back in vogue, literally, thanks to charismatic young players like Andy Roddick, Maria Sharapova and Rafael Nadal, as well as the annual convergence of the U.S. Open and Olympus Fashion Week in New York. (This year, the Open is running Aug. 29 to Sept. 11, Fashion Week Sept. 9 to 16.) Style-conscious players like Serena Williams, whose erratic play of late has coincided with the launch of her Nike clothing line, often shuttle from the court to Fashion Week shows and parties. Last year, Lacoste made tennis the theme of its runway show, fitting for a company founded by tennis pro Rene Lacoste in 1933. Ralph Lauren just paid $20 million to …