Troubled pop star Britney Spears was unbeknowingly caught out by paparazzi twice on a recent night out when she bared her bosom and flaunted her skimpy underwear. The singer, who had been partying at Jimmy's Club in Hollywood, was photographed slipping out of her green satin dress on Monday night (11Jun07), revealing her right breast to the world. She was then snapped as she climbed into a taxi, flashing her undergarment to a shocked crowd. The Toxic star was photographed in a less than flattering pose last year (06), when paparazzi caught her getting out of a car without any underwear.