Lollapalooza 2011 Lineup Announced! April 26, 2011 As you know we throw the hottest parties in the city for Lollapalooza. In the past we've done performances by Katy Perry, Kanye West, Perry Farrell, Mickey Avalon, Snow Patrol, Kenna, Mike Posner & many more! We will be releasing our party info soon, but in the meantime wanted to share the lineup for the 20th anniversary of Lollapalooza…