FALLEN Australian Idol contestant Tarisai Vushe launched an extraordinary attack on Victorian finalist Natalie Gauci, calling her rude and horrible.

Vushe didn't hold back with Confidential, revealing she had huge disagreements with Gauci.

"She can be nice but she can be horrible," Vushe said.

"I have had to let loose on her a couple of times. I told her off so much, I screamed at her because she was so rude.

"I said, 'Talk to the hand'."

The tension between Vushe and Gauci was obvious when the two were left standing together on Monday night, with Vushe eliminated.

The diminutive singer said she first unloaded on Gauci after Ben McKenzie was eliminated two weeks ago.

"She was absolutely rude to me, and I don't know why she was like that," Vushe said.

Vushe revealed that there was tension behind the scenes between the finalists, and that she had no time for Gauci, Victorian Jacob Butler and Sydneysider Daniel Mifsud.

Sources told Confidential that the Idols and judges Ian Dickson, Marcia Hines and Mark Holden were fed up with Vushe's unpredictable behaviour.

Both Mifsud and McKenzie have made it clear that they didn't have much time for Vushe.