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

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

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

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, ...

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

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

Lovato joined the Jonas Brothers to perform songs from "Camp Rock," sparking Disney Channel nostalgia for their fans.

The Jonas Brothers surprised fans Sunday night by bringing out a surprise guest at their 20th anniversary tour: Demi Lovato.