Lollapalooza has officially announced the 2012 lineup for the now annual event in Chicago. Headlining will be Red Hot Chili Peppers, The Black Keys, Black Sabbath, and Jack White. Also appearing are At the Drive-In, The Afghan Whigs, The Gaslight Anthem, Doomtree, and many more. You can see the whole lineup here.

This year's festival will take place August 3rd -5th in Grant Park in Chicago, IL. Tickets are available here.