Did Katy Perry Break Up with BFF Rihanna Over Chris Brown?

Did you also think it was a little weird that Katy Perry chose to take Girls star Allison Williams to the Grammys as her date instead of boyfriend John Mayer or nominated 2012 date Rihanna? It turns out there might have been a little revenge scheme going on here, according to some sources.

Source: http://www.ivillage.com/did-bffs-katy-perry-and-rihanna-break-over-chris-brown/1-a-521989?dst=iv%3AiVillage%3Adid-bffs-katy-perry-and-rihanna-break-over-chris-brown-521989

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