Organizers for the 2010 Lollapalooza Festival, scheduled to take place August 6th-8th in Chicago, Illinois, revealed the full lineup of acts for this year's event. Pop star Lady Gaga, with her hugely successful "Monster's Ball" tour, will co-headline with recently reunited Soundgarden, Green Day, Erykah Badu, and the Strokes. Click Here for a complete list of acts and ticket info.