The jealous singer almost got in a punch-up recently with the aspiring model, and now the arch enemies are sparring over social media – with Rihanna copping accusations of racism on Twitter and Karrueche drawing "Ange v Jen" comparisons on Facebook.
The controversy ignited when Rihanna tweeted a photo of a packet of rice cakes dressed up in sunglasses and hoop earrings, along with the comment, "Ima make u my b----."
Many bloggers and tweeters concluded that Rihanna was making a racist jab at Karrueche, who is half Vietnamese.
Another theory is that it may have been a reference to the lyrics in her song 'Birthday Cake': Come and get it. Sweeter than a rice cake, cake worth sipping."
Either way, the apparent response from Karrueche wasn't pretty.
A screen grab from her facebook page reads: "I win you loose!!! *Nicki voice* I meannnn I got him, you got pictures of him. Buwhaha…"
A friend then commented: "I'm Angelina , you Jennifer. C'mon b--ch, you see where Brad at."
…Which is in fact a line from Nicki Minaj's song 'Stupid Hoe'.
Karrueche has since tweeted that she doesn't even have a facebook page… so maybe some crazy fan with too much time on their hands faked that part.
Either way, it's clear these two aren't friends. And they're fighting over ladybasher Chris Brown.
Fun fact: Today is International Womens Day. *Feminism facepalm*