Watch Britney Spears Suck Helium & Sing Taylor Swift
Britney Spears already has a pretty high-pitched singing voice, but helium takes it to the next level.
During her appearance on the U.K.'s Jonathan Ross Show, Spears takes the Helium Challenge, agreeing to suck helium from a balloon -- don't try this at home, Ross warns -- and sing a song. Instead of choosing one of the tracks from her latest album Glory, which she's been promoting around the U.K. with a series of fun interviews, she picks Taylor Swift's "Shake It Off," squeaking out the title words twice to the audience's delight.
Watch the moment below: