Dreams do come true, especially for Demi Lovato! During the 2011 Z100 Jingle Ball event held Friday night (Dec. 9), Lovato had the opportunity to share the same stage with her musical idol, Kelly Clarkson for a duet of the holiday classic, ‘Have Yourself a Merry Little Christmas.’

Clarkson started the sentimental Christmas song solo, as confetti fell from the rafters of the stage. When the crowd’s cheering softened after the first bar of the tune, Clarkson proudly introduced the actress and singer to the stage, to the fans delight who packed the house at Madison Square Garden in New York City.

The two powerhouse vocalists belted out the lyrics to the song, leaving the fans beside themselves wanting more. ”She can sing her butt off!” Clarkson exclaimed above the cheering crowd as she hugged Lovato.

“We’ve been dying to sing together!” added a humbled Lovato.

And from the sound of things, it might not be the last time the two sing together. Following the event, Lovato and Clarkson exchanged words via Twitter about doing it again in the future.

@ddlovato girl we have got to sing together again!” Clarkson tweeted. “You have such a powerful and beautiful voice! I love your spirit.”

Lovato added, “Oh my God….. Oh my God…. Oh my God … #shaking,” she wrote. “I. Just sang. With Kelly. Clarkson. #ahhhhhhh.”

Watch Demi Lovato and Kelly Clarkson Perform

‘Have Yourself a Merry Little Christmas’ Live