The Jonas Brothers welcomed Joe Jonas’ ex-girlfriend, Demi Lovato, onstage for a surprise performance at their first concert ...

Demi Lovato surprises fans by joining the Jonas Brothers at the Jonas20 anniversary tour opener for a “Camp Rock” reunion.

Joe, Kevin and Nick of the Jonas Brothers and Lovato starred in the 2008 Disney Channel Original Movie, Camp Rock, and it’s ...

The band — consisting of brothers Joe, Nick and Kevin Jonas — kicked off their 20th anniversary tour on Sunday at MetLife ...

For Demi Lovato, reuniting with the Jonas Brothers at the kickoff show for the band’s 20th anniversary tour was “an instant ...

The pair sang "This Is Me" and "Wouldn't Change a Thing," 17 years after the Disney Channel original movie was released.

Lovato opened up about the "incredible" moment with the Jonas Brothers at New Jersey's MetLife Stadium on the 'Chicks in the ...

On opening night of the Jonas Brothers' tour, the band brought out four surprise guests, including former tourmate Demi ...

Demi Lovato stole the show at the Jonas Brothers concert in a sage green Acne Studios look featuring a triangle bra top and ...

Reflecting on her recent surprise appearance at a Jonas Brothers' concert, the 32-year-old singer called the performance both ...

Demi Lovato wouldn't change a thing about how her epic reunion with the Jonas Brothers came to be. Two days after Lovato, 32, ...

Demi Lovato surprised fans by joining the Jonas Brothers during their first show on the "Jonas20: Greetings From Your ...