Rihanna, Teyana Taylor Twitter Beef: Chris Brown's Ex Mocks Karrueche Tran's Pal in Viral 'Caught in the Rapture' Instagram VIDEO, Singer Fires Back

On Tuesday (September 23), Rihanna posted a viral Instagram video of her stylist Yusef Williams dressed in a curly wig and crooning the hit R&B song "Caught in the Rapture." Problem is, Williams was apparently mocking fellow songstress Teyana Taylor (who posted a similar video of herself busting-out the popular Anita Baker tune not too long ago). But Taylor (a good friend of Chris Brown's current girlfriend, Karrueche Tran) didn't take the apparent diss sitting down. Instead, she fired back on Twitter, warning RiRi, "Don't play with me!" Read on for all the juicy details.

UPDATE: Rihanna, Teyana Taylor Twitter Beef Sparks Domestic Violence Outcry: 'Beating Chris Brown's Ex's Battered Face' Viral Twitter PHOTO, Starlet Removed from Adidas-Reebok Deal? 

Rihanna vs. Teyana Taylor Twitter: Karrueche Tran's Friend Deems Chris Brown's Ex 'Cyber Bully,' Instagram Diss 'Very Harsh' [LISTEN]

Here's the viral clip the "Diamonds" songstress posted on Instagram earlier this week:

badgalriri: "B#tches be like...yasssss @yusefhairnyc."

And here's the video aspiring actress Teyana Taylor posted awhile back...

Understand why Taylor's offended?

Well, here's what she had to say to RiRi on Twitter...

@TEYANATAYLOR: "Don't play wit me @rihanna f*ck all this industry sh*t... I sing caught in the rapture on IG then she posts her boy singing the same song, the same part, with curly hair and a snap back??? #PETTY... petty is petty and shade is shade, b*tch knew what the f*ck she was doing."

Taylor went on to warn the Barbadian beauty and her close gal pal Melissa Forde, "I'm done on this twitter sh*t. When y'all b*tches see me POP OFF. @mforde11 @rihanna."

And Rihanna's response?

@rihanna: "I REFUSE to help your career...you will NOT get an @ from me! Not til you pay me! #nomorefreepromo #iRefuse."

@rihanna: "I hate broke b*tches."

As for Melissa Forde's take on things... she went a little crazy:

@mforde11: "@TEYANATAYLOR #HOSHUTDAF#CKUP #BigSeanvoice #DizzzaintwhatYOUwant #isFrankenweeniecallinmesicklooking #callab#tchupntellmehowureallyfeelc#ntface #F#ckUPayme #LILB#TCH #b#tchugotabetterchanceseeinME #tourdatesareavailableonline #catchMifucan."

Apparently publicist Clarence McMillan even got in on the catfight action - check out his Twitter updates here.

Wow... that's intense stuff. Will the ongoing feud between RiRi and Team Karrueche Tran ever end?

BTW - here's how close Taylor and Tran are: