Rihanna Tickets

Rihanna has reacted to an apparent diss from her ex-boyfriend Chris Brown by unfollowing him on Twitter.

Eyebrows were raised earlier today when Brown dropped a freestyle over Kanye West's Theraflu (aka 'Way Too Cold', aka 'Cold') taking shots at an unnamed former girlfriend:

"Don't f**k with my old bi***es like a bad fur/ Every industry n**ga done had her/ Trick or treat like a pumpkin just to smash her/ Bi***es breaking codes, but I'm the password."

Less than an hour after the track was posted to Brown's Twitter account, Rihanna posted the cryptic message: "Aw, poor dat #neaux1currrrr"

Fans have since noticed RiRi appears to have unfollowed Brown on the social networking site - despite wishing him a happy birthday just a few days ago.

Just when you thought everything was cool between them, it looks like Rihanna and Chris are back on bad terms again. The question is... why?

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