OutKast fans can rejoice as the popular rap duo have finally been confirmed to be co-headlining Coachella 2014. Rapper Big Boi recently took to his Twitter to share the good news with anxious fans. The group will be co-headlining with Arcade Fire and Muse. Tickets for Coachella 2014 are now available to purchase. Outkast will be performing on April 11 and 18.