Britney Spears sings 'Shake it Off' while on helium

Things got a little silly while Britney Spears was making an appearance on The Jonathan Ross Show.
After losing a game of “forfeit tennis,” the 34-year-old singer was forced to take the “helium challenge” where she had to sing after inhaling some helium.
After taking a deep breath from a balloon, Britney hilariously started singing Taylor Swift‘s hit “Shake It Off.”