MUSIC
11/30/2012 03:21 EST | Updated 11/30/2012 04:06 EST

Pop Power Rankings: Rihanna's A Top, Britney's Back And Psy Bumps Bieber

LONDON, ENGLAND - NOVEMBER 19:  Singer Rihanna performs live on stage as part of her 777 tour at The Forum on November 19, 2012 in London, England.  (Photo by Simone Joyner/Getty Images)
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LONDON, ENGLAND - NOVEMBER 19: Singer Rihanna performs live on stage as part of her 777 tour at The Forum on November 19, 2012 in London, England. (Photo by Simone Joyner/Getty Images)

Power Rankings have been rating sports teams throughout their seasons for years based on statistical analysis, momentum and gut feelings. Those folks shouldn't have all the fun.

So based on sales and airplay charts, magazine covers, twitter trends, and, of course, gut feelings -- we bring you HuffPost's Pop Power Rankings, our weekly roundup of who's on top (and who has fallen off) in the pop game.

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