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.

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

On Sunday, Demi Lovato joined the Jonas Brothers on stage in New Jersey for the opening night of the JONAS20 tour, dazzling ...

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

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

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

Lovato and the Jonas brothers performed renditions of “This is Me” and “Wouldn’t Change a Thing”, both of which featured in ...

Disney fans assemble! Demi Lovato and Joe Jonas reportedly reunited for a nostalgic performance at Jonas Brothers’ MetLife ...

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

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

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