Justin Timberlake isn't the only one enjoying the single life. Cameron Diaz was at Cut in the Beverly Wilshire Hotel Monday night, "with a girlfriend and drinking wine for more than three hours," says an L.A. spy. The friend then asked a pointed question about her new beau, surf champ Kelly Slater. "Cam grabbed a breadstick to demonstrate. She was in great spirits and kept twirling her hair," says the witness. The breadstick was 9 inches long, if you were wondering. ... Tom Brady dined with new girlfriend Gisele Bundchen at Philippe in New York City Saturday night, less than 20 hours after making friends with her younger Victoria's Secret counterpart Selita Ebanks at a Super Bowl party in Miami. Meanwhile, a blissfully unaware Gisele was spotted partying with girlfriends at Marquee last week. ... "Fashionista is a good word, but it does not apply to me," Cynthia Nixon told us at Fashion Week. "Miranda is a fashionista." Speaking of Miranda, is the "Sex and the City" movie any closer to happening? "The film is still in negotiations," Nixon replied.