Lovato and the Jonas brothers performed renditions of “This is Me” and “Wouldn’t Change a Thing”, both of which featured in the 2008 Disney Channel film Camp Rock, which saw Joe and Lovato – who had a real-life, albeit short-lived, romance in 2010 – play love interests on screen.

Lovato admitted she felt "nervous" as she and the JoBros, who reached out "last week" to ask if she would join them on stage, sang "This Is Me" and "Wouldn't Change A Thing," two tracks from the beloved Disney Channel movie that she hasn't performed in years.

Demi Lovato wouldn’t change a thing about how her epic reunion with the Jonas Brothers came to be. Two days after Lovato, 32, surprised fans by performing with the band on the opening night of their JONAS20: Greetings From Your Hometown Tour at MetLife Stadium in East Rutherford,