Milwaukee World Festival, Inc. officials have revealed that the eighth major show slated for Summerfest 2014 will be Outkast, with special guest Gary Clark Jr.

Outkast will headline the Marcus Amphitheater on Sunday, June 29.

Antwan "Big Boi" Patton and André "3000" Benjamin have reunited for the 20th anniversary of their debut album "Southernplayalisticadillacmuzik."

Tickets go on sale March 3 at noon and include Summerfest admission. Tickets can be purchased at the Summerfest box office, Walmart stores, online at Ticketmaster.com and by phone at (800) 745-3000 or (866) 448-7849.

Patrons may also utilize "ticketfast" at Ticketmaster.com to print bar-coded concert tickets from home. Fees may be added to all purchases.

Outkast has sold more than 25 million albums. "ATLiens," "Aquemini," and "Stankonia" were all platinum-selling releases, and then "Speakerboxxx/The Love Below" was Diamond-certified and won six Grammy Awards.

The group also released the film and soundtrack entitled "Idlewild', which debuted at No. 1 on Billboard’s Top R&B/Hip-Hop Albums chart.

Clark Jr.'s debut album "Blak And Blu" earned Grammy Award nominations in both rock and R&B categories for the same album in the same year, winning "Best Traditional R&B Performance" with "Please Come Home."