Gwen Stefani and Blake Shelton appeared on the Tonight Show last night—allowing everyone involved to check off "promote this season of The Voice" from their to-do lists—and took part in a lip-sync battle against Jimmy Fallon. Gwen won.

Blake Shelton started with a fairly uninspired performance of Taco's "Puttin' On the Ritz," but what he lacked in effort was soon made up by Gwen Stefani's "Call Me Maybe." Though it's only a lip-sync, it's also somehow a No Doubt cover? We'll forgive her for somehow not knowing the words.

[via NBC]