Britney Spears was spotted all Tuesday night and early Wednesday morning shooting her new music video ‘Piece Of Me’, directed by Wayne Isham, at Social Hollywood. The singer had actor paparazzi in the video, and dealt with the real life version leaving the set, with Sam Lufti behind the wheel of her Mercedes. Watch footage below the fold. Check out pictures and video from X17 (set1 / set2 / set3).