If anyone had any doubt about Demi Lovato’s ability to get on a stage and totally own it, they don’t anymore. The singer appeared on Saturday Night Live‘s Oct. 17 episode as the musical guest with host Tracy Morgan and quite simply killed it during two stunning performances. First singing a medley of “Cool For the Summer” and “Confident,” Demi sexily showed off her toned body and dance moves in a short dress, but it was really her emotional rendition of “Stone Cold” that left everyone’s jaws on the floor with her incredible vocals. After her appearances, the Internet was rightfully full of “I think I just became a Demi Lovato fan” tweets – join the club, universe! Watch the two performances here (above and below), and then check out her surprise concert in NYC’s Times Square, and learn 15 little-known facts about the confident singer.