Long live Disney Channel's Camp Rock!
Almost six years after the TV movie debuted, co-stars Demi Lovato and Joe Jonas came together Saturday night to perform a classic song from the film.
In the middle of her performance at the Staples Center in Los Angeles, the 22-year-old surprised Lovatics when Joe appeared onstage to sing "This Is Me."
"Surprise LA! @DDLovato thank you for having me," the former Jonas Brothers member shared on Twitter. "Tonight was amazing. Fun keeping this a secret."
According to an eyewitness, the unsuspected moment was the ultimate gift for fans.
"When she started that song, we were loving it," a source told E! News. "And then when Joe Jonas came out, the crowd went crazy. They were great."
After first meeting through Disney as young child stars, Demi and Joe have managed to stay very tight friends. The twosome even dated for a brief period of time before calling it quits.
"I can fortunately say that him, and his brother Nick, have always been there for me and are literally family, and like brothers," she recently told ABC's Nightline. "We have a great friendship."
And it sure looked like it Saturday night.
"They seemed like old friends and gave each other a high-five at the end," the eyewitness tells E! News. "It was the highlight of the night."
As she continues her tour across the nation, Demi has another reason to celebrate. This weekend, the singer learned that her single, "Really Don't Care" reached a milestone on the charts.
"DEMI is officially gold and #REALLYDONTCARE is platinum!!!!" she tweeted. "Thank you Lovatics + @RIAA!!!"
Congratulations, Demi!