The feuding continues between best friends Rihanna and Katy Perry.  And it's all over Chris Brown.  Katy perry has been been very vocal about her disapproval of Rihanna dating Chris again.  But Rihanna has final snapped back by telling a close source that "Katy's a hypocrite since she's with John Mayer, who is one of the biggest sleazeballs on the planet!"  Obviously the girls care about each other, but they both seem to be in love with bad boys!  Let's hope they can eventually respect the others decisions and just BE THERE for each other like real Best Friends should. Here are a few pics of the Besties from happier times.