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

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

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 ...

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

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

"We’ve been through so much together," the singer said of her fellow Disney Channel alums. "It was really, really great to ...

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

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

The show ended on a touching note when the Jonas family, including their youngest brother Franklin, joined them onstage to ...

The Jonas Brothers opened the Jonas20 tour with Joe Jonas reuniting with Demi Lovato for the first "Camp Rock" performances ...

The Jonas Brothers already had fans feeling nostalgic with their new tour and then they raised those stakes with their first ...