Keira Knightley amazes Cher performing 'Believe' with unusual body part

Cher has now seen it all. She's witnessed many people cover her music over the years, but Keira Knightley's rendition of the pop icon's Believe must be the most unique.

In case you didn't know, Keira has an unusual talent—she can perform songs using her teeth! During an appearance on The Graham Norton Show, on which Cher also appeared, Keira was asked to perform one of Cher's hit songs, and she chose Believe. The actress then got close to the microphone and began flicking her teeth to the tune of Cher's iconic track.

Cher was amazed and exclaimed, "She's hitting the notes!" Beaming back at Cher, Keira smiled big and said, "I did it!"

When Cher asked Keira how she knew which teeth to hit to make the notes, Keira replied, "I don't know, I learned to do it as a kid. There was a kid at school who was cool, and he could do it."

Watch Keira Knightley perform Cher's Believe using her teeth below.

- Written by iHeart.com and republished here with edits and permission