Kendall and Kylie Jenner Lip Sync to Katy Perry for Some Reason

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Thank you, Kendall and Kylie Jenner. The teenagers have given us a reason to stop thinking about their mother's vagina.

These sisters have gone viral with a video that depicts them, along with pals Maddy and Spencer, lip-syncing to Katy Perry's "Firework." It's actually refreshing to see the reality stars act their age for a change.

This is not the first time members of the family have covered Katy. Watch them all make a mockery out of "ET right now!

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Kendall Jenner Biography

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Kendall Jenner is a sibling in the giant Kardashian family. At the age of 13, she signed a modeling contract with a top, worldwide... More »
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Kendall Jenner