PHOTO: Pippa Middleton's Dirty Dancing

Pippa Middleton Dancing In Bra And Skirt
Pippa Middleton and an unidentified dance partner

05/04/2011 AT 04:30 PM EDT

We all know Pippa Middleton can dress the part as the royal wedding maid of honor.

Turns out, she can also undress when the occasion calls for it.

A photo of Duchess Catherine's younger sister, 27, recently surfaced in which the tanned, toned Brit is dancing in her bra with an unidentified shirtless man.

No word on the royal reaction to the revealing photo, but something tells us the public's fascination with the younger Middleton is just heating up.

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