"We’ve been through so much together," the singer said of her fellow Disney Channel alums. "It was really, really great to spend time with them."

Demi Lovato wouldn't change a thing about her recent reunion with the Jonas Brothers. In an episode of Chicks in the Office posted Tuesday (Aug. 12) - two days after the pop star made a cameo at the Jo Bros' kickoff 20th anniversary tour concert in New Jersey - Lovato opened up about how "healing" it was to perform Camp Rock hits "This Is Me" and "Wouldn't Change a Thing" with former costars Joe,