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As Rihanna hosted her inaugural Diamond Ball, behind the scenes she was conducting her own little photo shoot.

Wearing a stunning Zac Posen gown in midnight blue, the Grammy-winning singer, 26, showed off it's voluminous skirt that was so big some of her entourage could hide underneath it.

Of course it wouldn't be a Rihanna photo shoot without a little risque, and in one image the Bajan star poses topless with a smoking cigar.