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When a member of the Kardashian-Jenner family has a birthday, low-key isn't exactly the word we'd use to describe their celebration.

True to form, Kylie Jenner's 21st birthday was anything but low-key.

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SEE ALSO:Dictionary.com didn't throw shade at Kylie Jenner. It actually made an important point.

Kylie posted a shot of herself with Kendall, Kim, Kourtney, Kris, and Khloe, in which they all put their middle finger up at the camera.

View this post on Instagram

How rude. Happy birthday Kylie!

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