Watch Demi Lovato Nail Cynthia Erivo’s ‘Defying Gravity’ Battle Cry at 33th Birthday Karaoke Party

Demi Lovato is flying high and defying gravity on her birthday, with the musician celebrating the occasion with a karaoke party that featured an impressive cover of Cynthia Erivo’s signature song from Wicked. In a video posted Wednesday (Aug. 20) to ... [1581 chars]