Why are Katy Perry and Rihanna fighting? katy and Rihanna Tue-06-Nov-12 11:26 Share this By Sharyn CaseyKaty Perry and Rihanna aren’t talking because she doesn’t support Rihanna getting back together with Chris Brown after he beat her up. There are photos of Katy sitting with Rihanna at the VMAs asking her what she’s up to after she kissed Chris infront of everyone at the VMAs – The girls haven’t talked since the show. You May Also Like Very delicious lyric video for Katy Perry's song 'Birthday' Rihanna and Drake’s PDA at the MTV Movie awards! See Riri and Eminem perform The Monster at the MTV Movie Awards Become a fan of The Edge on Facebook and on Twitter .