Nicki Minaj Cusses Out Mariah Carey

Jeez! I guess all of the rumors swirling around of Nicki and Mimi having beef are real!
TMZ caught this video of Nicki cussing out the Diva over her Divalicious ways!

During auditions in Charlotte, N.C., Minaj threatened "I'm gonna knock you out.." to Mimi causing producers to halt auditions for the rest of the day.
In the video you can see Minaj on the far left, Keith Urban in the middle (trying to keep the peace), Mariah and Randy Jackson on the end.

According to TMZ:
In the footage, obtained by TMZ, Nicki is clearly furious ... shouting, "I told them, I'm not f*ckin' putting up with her f*ckin' highness over there."

Sources say Nicki later threatened to "knock out" Mariah ... but that part wasn't captured on tape.

It all went down while the two were sitting at the judge's table ... with Keith Urban sitting in between them and Randy Jackson sitting on the far end, next to Mariah.

We're told the whole thing exploded over a disagreement about a contestant's performance.

According to our friends at MouthToEars.com, producers ended the auditions for the day so the two judges could cool down.