Demi Lovato teases a glimpse of her trim waist in an all-black ensemble

Z100’s Jingle Ball Brings Dua Lipa, Lizzo, Charlie Puth, Demi Lovato to Madison Square Garden, But Ices Backstreet Boys Out of Socials, Livestream

Demi Lovato Channels Joan Jett With Her Hair At NYC’s Jingle Ball: Photos

Demi Lovato and Lizzo bring down the house as they perform at iHeart Radio's Jingle Ball