Article continues below advertisementJenna Bush Hager showed off her vocals in an unexpected live moment.On the Tuesday, August 5, episode of TODAY With Jenna & Friends, the talk show host, 43, belted out the lyrics to Beyoncé's "LEVII'S JEANS."Article continues below advertisementSource: TODAY With Jenna & Friends/YouTubeJenna Bush Hager is a fan of Beyoncé's 'Cowboy Carter.'Bush Hager watched the singer's latest Levi's ad in awe before continuing the video's background track."You call me pretty little thing," she sang while shimmying in her seat, then gushing over the tune.