The band — consisting of brothers Joe, Nick and Kevin Jonas — kicked off their 20th anniversary tour on Sunday at MetLife Stadium in their home state of New Jersey. But to make it more special, they surprised their fans with some special guests throughout the show, including Demi Lovato .

Demi Lovato found it "really healing" to perform with the Jonas Brothers over the weekend. The 32-year-old singer-and-actress made a surprise appearance at her Camp Rock co-stars' show in New Jersey on Sunday (Aug 10) and not only was it "so nice" to be back on stage with the trio after receiving a call from ex-boyfriend Joe Jonas,