WATCH: Nicole Richie Shows Off Sexy Moves in Britney Spears Dance-Off

Nicole Richie has got some moves!

The reality star/fashion designer recently accepted a Britney Spears dance-off challenge from a friend and proceeded to put on quite a show in a new YouTube video. Richie and her pal copied Spears' moves, as they got down to "I'm A Slave 4 U." Tweeting along with the video, Richie wrote, "In honor of my queen @BritneySpears. Can't wait to dance tonight!"

And, boy, did she do her proud. We knew Richie, 29, used to break it down alongside Paris Hilton back in her clubbing days -- but we never knew she had this kind of rhythm! Even Kim Kardashian was shocked by her pal's talent. "Omg this is amazing!" the reality star twittered in response to the clip.

Maybe stylish mom's next move should be an appearance on Dancing with the Stars!

Check out Nicole's impressive routine here:

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