Azealia Banks has branded Iggy Azalea a "silly white bitch".

In response to Iggy's claim, the New York-born star said: "YOU CALLED YOURSELF A RUNAWAY SLAVE MASTER, YOU SILLY WHITE B***H. STAY OUT OF GROWN FOLKS BUSINESS.

"Igloo is the f**king dumbest most condescending white b***h on the face of the earth. She honestly is just so f***ing dumb and delusional.

"Who asked her white ass to say anything? You are not invited to this conversation Rebecca. (sic)"

The '212' star then took aim at Iggy's relationship with Los Angeles Lakers basketball player Nick Young, who was recently caught on video admitting to cheating on his girlfriend with a 19 year old.

Azealia said: "Ur whole existence is a mockery of black women, just because you get black d*** in ur mouth doesn't give you a right to comment on anything.

"Somebody need to deport that b***h back to the f***ing outback steakhouse. Go put another shrimp on the barby b***h. (sic)"

The row erupted after a Twitter follower referred to Iggy as Becky, the mystery woman Beyoncé mentions on her new album, who she suggests was romantically involved with her husband Jay Z.

Iggy said: "Don't ever call me Becky. Generalizing ANY race by calling them one sterotypical name for said race ... I personally don't think is very cool, the end. (sic)"