The Strokes, Arcade Fire and Phoenix also headline the August fest in Chicago.By James Montgomery Lady Gaga Photo: Marco Prosch/ Getty Images Lady Gaga is bringing the Monster Ball to Lollapalooza this August. Hope she's packing some sunscreen. Early Tuesday morning (April 6), organizers of the granddaddy of U.S. summer fests revealed the lineup for the 2010 edition of Lolla, and Gaga's name is atop the list, joined by fellow headliners Green Day, the recently reunited Soundgarden, the reformed Stokes, the Arcade Fire and Phoenix. Lollapalooza 2010 Lineup Most of the headliners for the Chicago festival have some connection to Lollapalooza's past.