Britney Spears' manager posted this video of the pop princess covering Alanis Morissette's "You Outta Know," at her Greensboro, North Carolina concert the other night, and as much as we love Brit and her booty shaking dance numbers, we're not so sure she should be covering the hit 90s song. Then again, she is actually singing it, and it does sound pretty good, so what do you think? And what would Alanis say?