Demi Lovato performs at the We Can Survive Concert at the Hollywood Bowl on Saturday, Oct. 24, 2015, in Los Angeles. (Photo by Rich Fury/Invision/AP)

Demi Lovato performs at the We Can Survive Concert at the Hollywood Bowl on Saturday, Oct. 24, 2015, in Los Angeles. (Photo by Rich Fury/Invision/AP)

Too early to think about next year’s Minnesota State Fair? Not if you’re a fan of Disney Channel alumni and teen-centric pop stars. Former “Camp Rock” cast mates Demi Lovato and Nick Jonas announced a co-headlining tour for next year that includes an Aug. 31 date at the fair grandstand, the first confirmed concert for next year's Great Minnesota Get-Together. Ticket info is not yet available for the show, which falls on a Wednesday.

Lovato and Jonas, both now 23, are doing well shedding their teenybopper images for sexier adult territory with their latest albums. Lovato touted her new one, “Confident,” with a “Saturday Night Live” appearance two weekends ago. Jonas charted high in Billboard last year with his dance-clubby single "Jealous." The longtime friends also appeared together at last year's KDWB Jingle Ball. They share a manager and are frequent collaborators.

Their Future Now Tour will follow fellow ex-Disney star Selena Gomez into bigger venues on tour next summer. Tickets are already on sale to her June 28 concert at Xcel Energy Center.