Britney Spears Sings Taylor Swift's 'Shake It Off' On Helium

Britney Spears appeared on The Jonathan Ross Show Saturday and when told by Ross, "You can sing one of your own, you can sing a popular song – something we all know,"  Britney stepped up and performed a helium rendition of Taylor Swift's famous 'Shake It Off' song. WATCH! 


 

Photo: Getty

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