Have you ever dreamt of a Britney Spears/Taylor Swift mash-up? Well, you're about to get all that and more as Brit just sang 'Shake It Off'... on helium.
Appearing on U.K's Jonathan Ross Show, Britney Spears participated in the Helium Challenge, which is as simple as sucking in a huge breath of the voice-tightening gas and then singing a cover of a song of her choice.
Being the Pop Queen she is, she obviously chose the pop song of the year, 'Shake It Off'.
She didn't sing much but she's just so cute!