Floyd Mayweather Baby Mama Drama: Melissa Brim vs. Josie Harris Twitter Beef Over Shantel Jackson Turns Violent, Exes Fight & Scream in Las Vegas [Watch VIDEO]

Floyd Mayweather's ongoing "beef" with rapper 50 Cent is a thing of the past. The undefeated boxing champ has more pressing issues to deal with - including the fact that his two former baby mamas absolutely HATE each other!

UPDATE: Floyd Mayweather Baby Mama Drama: Josie Harris Sues 'Lying & Jealous' Ex After Manny Pacquiao Victory, Domestic Violence & 'Drug Abuse' $20 Million Fight 

It all started with this hostile Instagram taunt posted by Josie Harris, where she accuses Melissa Brim of flaunting the goods of Mayweather's OTHER ex, Shantel Jackson:

Well, Brim wasn't hearing that:

melissiarene: "That face you make when someone irrelevant tries to use you to get their followers up lmao Few things about MelissiaRene.... I know who I am, I don't give a damn what others think about me, I play the FRONT never the BACK , I'm a Boss, I worry about self because self preservation is the law of the land & last, but not least, I'm a woman before anything & if I have somethin to say I'm not hiding behind NO ONE or ANYTHING.... #HAPPYSUNDAY."

Fighting words!

The feuding ladies eventually took things to the next level, when both were spotted at a promo event for Mayweather in Las Vegas...

Apparently, the two started screaming at one another in the streets, and things ultimately got pretty violent. Of course, Mayweather was caught in the middle of the little cat fight:

Following the mini-street fight, both exes took to Instagram again:

Will the drama ever end?