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Watch out, world, Beyoncé is working her bootylicious curves.

The singer recently made a cameo in Tom Ford's spring 2011 fashion show. But it wasn't just any old runway scenario: The celebrated designer showed his first womenswear collection in six years. (He left Gucci in 2004 when contract negotiations went sour.)

For such a hugely fabulous occasion, Ford enlisted the help of fierce ladies like B., Julianne Moore and Lauren Hutton, along with top models Daria Werbowy, Chanel Iman and more.

Though the supersecret show went down in September, video of the event was just released today. Click in and check out the "Single Ladies" singer strut her stuff around the two-minute mark.

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