While everyone probably watched the Victoria's Secret Swim Special for all of the gorgeous Angels, Demi Lovato [1] quickly stole the show thanks to not one, not two, but three knockout performances that would've made Jennifer Lopez proud [2]. Although the pop star — who was caught canoodling with boyfriend Wilmer Valderrama [3] in St. Barts while on location for the shoot earlier this year — left her latest hit, "Stone Cold," [4] out of the rotation, she did blow everyone away with powerful renditions of "Confident," "Cool For the Summer," and "For You." [5] Between the jaw-dropping black bodice she was wearing and her out-of-this-world vocals, Lovato totally slayed. Keep reading to watch her performances, and then check out her appearance at the Grammys that had everyone talking [6].