New Delhi, Aug. 11 -- The Jonas Brothers kicked off their 'Greetings From Your Hometown' tour with a surprise that thrilled fans - a reunion with fellow Disney Channel star Demi Lovato.

The first show of the tour took place on Sunday night at MetLife Stadium in East Rutherford, New Jersey - a special location for both the Jonas Brothers and Demi, who all have ties to the area.

The night was already filled with fan favourites like 'Love Bug' and 'SOS', but the biggest cheer came near the end of the show when Joe Jonas teased a familiar name. "Ladies and gentlemen," he said to the crowd, "Demi Lovato."

Demi then joined the brothers on stage for a set of beloved Camp Rock songs, including 'Gotta Find You', 'This Is Me', and 'Wouldn't Chan...