The Jonas Brothers surprised their New Jersey audience with a nostalgic reunion at their MetLife Stadium concert. Joe Jonas brought out his former onscreen love interest and real-life ex-girlfriend, Demi Lovato, to perform songs from their 2008 Disney film, "Camp Rock." The pair hadn't performed the songs live in over a decade. The concert also featured surprise appearances by Jesse McCartney and their former bodyguard, Big Rob, adding to the night's sentimental atmosphere.

Prepared by Emily Rhodes and reviewed by editorial team.