The Jonas Brothers and Demi Lovato delighted fans on Sunday night when Lovato made a surprise appearance at the boy band’s ...

The pair performed 'This is Me' with Joe chiming in at the end to make even more tears stream by singing 'Gotta Find You' ...

Demi Lovato wasn't the only Jonas Brothers' guest star Sunday: Members of Switchfoot, Dean Lewis, Jesse McCartney and ...

Demi Lovato and Joe Jonas reunited on stage during the Jonas Brothers’ 20th anniversary tour, performing Camp Rock hits after ...

Watch Jonas Brothers and Demi Lovato perform 'Gotta Find You,' 'Wouldn't Change a Thing,' and 'This Is Me' at Metlife Stadium tour opener.

Demi Lovato surprised fans at the Jonas Brothers’ JONAS20 tour opener at MetLife Stadium, reuniting with Joe Jonas for live ...

Demi Lovato joined the Jonas Brothers onstage for the opening night of their tour at MetLife Stadium in New Jersey.

Demi Lovato made a surprise appearance at the kickoff to the Jonas Brothers ‘ 20th anniversary tour at MetLife Stadium in ...

Demi Lovato and Joe Jonas reunite 15 years after their breakup to perform their 'Camp Rock' songs at The Jonas Brothers' ...

The Jonas Brothers brought out Disney co-star Demi Lovato as a surprise guest at their New Jersey stop for their "JONAS20" ...

The Jonas Brothers kicked off their 'JONAS20' tour with a surprise reunion with Demi Lovato, performing iconic 'Camp Rock' ...

Demi Lovato might be joining the Jonas Brothers for their ‘JONAS20’ tour at MetLife stadium and the internet is buzzing with ...