NME — Arcade Fire, Green Day and Phoenix also set to appear at the event more info

Live Daily — (LiveDaily.com) It's official. As initially reported in February, Lady Gaga will make her debut Lollapalooza appearance this summer. more info

VH1 News — Green Day and MTV are celebrating the Broadway debut of the band's "American Idiot" musical, including a special performance that 300 lucky fans will win tickets for. Go to AmericanIdiot.MTV.com for more info! more info

Pop Crunch — Great news for music fans: the lineup for Lollapalooza 2010 was formally announced on Tuesday and the rumors have turned out to not be rumors after all – Lady Gaga, Soundgarden, and Green Day are among the headlines set to rock Chicago’s Grant Pa... more info

Undercover, Australia — Lollapalooza 2010 has the old, the new, the borrowed and the blues this year. Green Day and Soundgarden are there. So are Lady Gaga, Devo and The Stokes. more info

Idolator — You can stop spinning the Lollapalooza wheel of fortune, as the official lineup has been announced for the 2010 fest at Chicago’s Grant Park. The three-day event will take place August 6 – 8, and for it Soundgarden will reunite for their first pe... more info

Perez Hilton — Lollapalooza, the famed music festival in Chicago's Grant Park, just released the lineup and it's AMAZING, including our beloved GaGalupe and Green Day! YES! Check it out: Soundgarden, Green Day, Lady Gaga, Arcade Fire, the Strokes, Phoenix, Social ... more info

MTV.com News — 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 sunscr... more info

VH1 News — Lollapalooza 2010 will be headlined by Lady Gaga, Green Day, Soundgarden, the Strokes, Arcade Fire and Phoenix on August 6-8 in Chicago. more info

MTV.com News — A special performance on April 22 will be held for 300 lucky fans -- go to AmericanIdiot.MTV.com for more info!By MTV News staff Green Day Photo: Kevin Mazur/ WireImage Green Day's "American Idiot" musical doesn't officially open on Broadwa... more info