Impersonating Christina Aguilera and all those vocal acrobatics is a difficult task. Impersonating Christina Aguilera and those vocal acrobatics while singing a children's song is nearly impossible. But Demi Lovato did just that last night on The Tonight Show—and yes, she hit all the right notes. Playing the latest game of Musical Impressions with Jimmy Fallon, Lovato brought out her inner Xtina voice (making her Dextina, I guess) and completely changed the way we'll forever think of the Spongebob Squarepants theme song. Her renditions of "Bingo Was His Name-O" in the style of Cher and "Twinkle Twinkle Little Star" as Fetty Wap are solid, too. We just wish Demi didn't have to repeatedly check on the cue card front of her, which we're guessing displayed the lyrics to "Twinkle," or a photo of a puppy.
In related news, Demi also announced yesterday that her music video for "Stone Cold" will arrive on Feb. 23. From this preview, it looks pretty, well, cold.