Demi Lovato is flying high and defying gravity on her birthday, with the musician celebrating the occasion with a karaoke ...

Demi Lovato celebrated 33 in style — and in a sexy tiny top! See photos from the singer's karaoke birthday bash ...

Lovato's friend shared a video of her showing off her vocals from her recent 33rd birthday party, including belting out the impressive notes from Erivo's version of Defying Gravity from Wicked.

Demi Lovato hopped on the mic for some birthday karaoke to celebrate her 33rd birthday. The “Camp Rock” star shared an Instagram Carousel of intimate pictures and videos from her celebration on August ...