Not to be outdone by Miley or Britney, Rihanna has just come out with anew videofor her songPour It up. And there's plenty of twerking and gyrating going on.

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The singer has been posting photos onInstagramof herself from video scenes in which she's sporting her sparkly barely-covering bra, along with several stripper shots.

Riri enlisted the help of Nicole 'The Pole' Williams for a lesson on the moves,says VH1, and Rihanna documented that with photos, too, writing, "My first pole lesson!"

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