Oops! Blake Shelton Doesn’t Know Girlfriend Gwen Stefani’s ‘Hollaback Girl’ [VIDEO] March 20, 2018 12:08 pm Published by austind03 <p>While playing "Name That Song" on "The Tonight Show Starring Jimmy Fallon," Blake Shelton made it very clear that he's no expert on girlfriend Gwen Stefani's music.</p>
