Ariana Grande Got Into the Christmas Spirit for Her TV Debut Performance of 'Imagine': Watch

Ariana Grande
Andrew Lipovsky/NBC

Ariana Grande performs with The Roots on The Tonight Show Starring Jimmy Fallon on Dec. 18, 2018. 

Christmas came a week early for Arianators.

Ariana Grande was the musical guest Tuesday night on The Tonight Show Starring Jimmy Fallon, where she created some Christmas cheer by performing the TV debut of her new single, “Imagine.”  

Wearing an oversized Christmas sweater that would look awful on anyone else, Ari and the Roots delivered the slow groove with all the right notes.   

Grande also stuck around for some Christmas carolling with Saturday Night Live alums Horatio Sanz, Tracy Morgan and Chris Kattan.

Ari's new track is currently in a three-way race for the coveted U.K. Christmas No. 1 and it’s lifted from her upcoming studio album.   

Watch her "Imagine" performance below.