Joined by Demi’s younger sister Madison DeLaGarza and Joe’s younger brother Nick Jonas, the former flames danced the night away before the birthday girl devoured her cake.
From the bash, Demi tweeted: “It’s my party!!!!!!!!!! Yayyyyy!!!!! Wish you all could be here!!!!!!”
Meanwhile, Demi is finally addressing rumours that she’s set to collaborate musically with BFF Selena Gomez.
“No! It’s not true,” she says. “I think she’s already finished with her album.”
That’s not to say it’s out of the question — especially given that Demi’s hard at work on her own album. “I don’t know,” she says about a possible collaboration.
As for what we can expect? A new R&B-inspired sound.
“It’s really nice to embrace it,” she says. “I grew up singing R&B and then I grew up listening to rock, so it was kind of weird. But I’m kind of learning how to incorporate the two and I’m having a good time with it. … I can put my vocal stylings on songs that are R&B and it showcases my vocals more than just singing really loud on a rock song.”