Music Demi Lovato’s Christina Aguilera Impression Is Absolutely Dead-On Feb 20, 2016 Share on Facebook Tweet on Twitter Jimmy Fallon challenges Demi Lovato to a game of random musical impressions, such as Fetty Wap singing “Twinkle Twinkle Little Star,” and absolutely nails Christina Aguilera’s voice. Share this:TweetStumbleUponEmailPrint