Move over, Britney Spears!

In anticipation of the singer's Femme Fatale concert Monday, Nicole Richie challenged her friend Scotty to a dance-off. Mimicking Spears' original "I'm a Slave 4 U" choreography, the 29-year-old designer and mother of two tweeted that the video was "in honor of my queen, Britney Spears. Can't wait to dance tonight!"

As the Winter Kate designer's friends cheered her on, they made it clear that Richie was the victor. "Scotty, you're getting schooled!" one shouted.

Tell Us: What do you think of Nicole Richie's dance moves?