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.

The Jonas Brothers have had multiple high-profile relationships over the years. In 2008, Nick Jonas dated Selena Gomez, while Joe Jonas dated Taylor Swift. Gomez recently reminisced about these relationships on an episode of the Therapuss podcast with Jake Shane on August 7.