The pair, who collaborated on chart-topping single "FEFE", spent time together at a fashion event and appeared to send a message to Cardi. Cardi's statement suggested Nicki said something out of pocket about Cardi's daughter, Kulture, but the Queen rapper vehemently denied bringing the baby up.
Soon after the incident, Cardi took to Instagram, where she claimed she let Nicki "talk big s**t about" her.
Sharing her side of the story on her Beats 1 radio show, Nicki has admitted she was "mortified" by the incident, while laying into Cardi B.
Rapper Azealia Banks also slammed the way that Cardi conducted herself on the evening.
"I just want people to know that Onika Tanya Maraj has never, will never speak ill on anyone's child". Let me tell you something, a woman can not give your man p*ssy if he doesn't stick his d*ck in there. You came into my f*cking culture!
"I was in a Gaultier gown - off the motherf*ing runway - and I could not believe how humiliated it all felt", she added.
"The way they passed by at this disgusting commotion I will never forget".
The "Barbie Dreams" rapper continued: "But we did hear this woman who accused me of saying something about her child just say nothing is off limits even talking about people's kids".
'You're angry, and you're sad, and this is not amusing.
The world gave you a blessing, of a lovely bundle of joy, and the only thing on your mind after you gave birth was to attack people and to stop their bags. "I ain't never played a hoe position", Minaj raps about Cardi B, who's spoken about having worked as a stripper.
"Get this woman some (expletive) help".
Payola is now trending on twitter and you guys can listen to Nick's entire podcast Queen Radio on Apple music. This s**t ain't amusing, you put your hands on someone...you put your hands on certain people you're going to die, ' she continued to rant. I let you talk bug sh*t about me!