Lady Gaga is never one to disappoint when it comes to on-stage fashion. And this weekend's Lollapalooza festival, held in Chicago, proved to be yet another dynamic smash for the performer, who not only wore an array of mind-blowing outfits but also crowd-surfed! While making a cameo with her friends the band Semi-Precious Weapons, Gaga literally launched herself into the crowd, wearing little more than ripped fishnets and super-high platforms. Later in the evening, Gaga shocked the crowd (which included on-again lovebirds Ed Westwick and Jessica Szohr) in a wide array of outfits, including a bloody bodysuit, a transparent plastic frock and purple glittering sunglasses. Click through our gallery to see all of Gaga's looks now.