Demi Lovato powers through the rain on Good Morning America. By Dan McMahon | Aug 18, 2017 @ 8:25 PM Demi Lovato stopped by Good Morning America for their Summer Concert Series on Friday (Aug. 18), delivering a killer performance of her latest hits ahead of her appearance at Billboard’s Hot 100 Fest on Saturday (Aug. 19). Click HERE Demi Lovato SHARE RELATED CONTENT Christina Aguilera’s new album gets rave review Ariana Grande’s engagement ring cost $93,000? Kesha alleged that Dr. Luke raped Katy Perry. Christina Aguilera watches fans sing her songs on youtube Taylor Swift allegedly fires back up dancer for sexist meme. Ariana Grande and Pete Davidson allegedly engaged.