Rihanna and Ciara are in one big Twitter cat fight when it all stemmed from Ciara being on Fashion Police stating:

“Rihanna used to be so nice. I just saw her and she wasn’t the nicest.

That’s when Rihanna responded with:

My bad ci, did I 4get to tip u? #howrudeofme

Then Rihanna tweeted:

U gangsta huh? Haaa Then Good luck with bookin that stage u speak of

I think Rihanna tweeted that in response to this tweet of Ciara’s in which she crosses a line that should never be crossed:

Ciara: I don’t even blame you no more @chrisbrown

That tweet is going around Twitter, but it looks like Ciara took it down, if it is in fact legitimate.

Ciara then writes:

Trust me Rhianna u dont want to see me on or off the stage

Their fight is trending on Twitter!! It’s like Friday night fights! But Rihanna extended an Olive branch:

Ciara baby, I love u girl! U hurt my feelings real bad on TV! I’m heartbroken! That’s y I retaliated this way! So sorry! #letsmakeup

@ciara Rhi u know its always been love since day 1! Doing shows/everything. you threw me off in that party! Apology accepted. Let’s chat in person

I’m starting to think that this whole thing was fake. What do you think?

Photos: Starbux/WENN