By OnMilwaukee Staff Writers   Published Jun 19, 2012 at 5:00 AM

Milwaukee World Festival officials have booked Elvis Costello & The Imposters for a headlining show at the new BMO Harris Pavilion Saturday, Sept. 15.

Tickets go on sale Thursday, June 21 at 10 a.m. They will be available at the Summerfest box office, Ticketmaster ticket centers, Walmart stores, at and by phone at (800) 745-3000 or (866) 448-7849 for the "Ticketmaster Express" automated line.