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Katy Perry is still avoiding Rihanna because she disapproves of her reunion with Chris Brown

The former best pals - who fell out last October because of the 'Stay' singer's reconciliation with Chris Brown, who is still on probation for beating her in 2009 - are still not speaking to each other and Katy reportedly made a special request to be seated no where near the couple at the Grammy Awards in Los Angeles on Sunday (10.02.13).

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