Gwen Stefani and Blake Shelton both lip-sync for Jimmy Fallon . ` Who do you think won ? ` The Voice '' coaches team up for a performance of the song with Taylor Swift, Demi Lovato and Ariana Grande.
Gwen Stefani and Blake Shelton both lip-sync for Jimmy Fallon . ` ` The Voice '' coaches team up for a performance of the song with Taylor Swift, Demi Lovato and Ariana Grande.