STVNoirin unhappy with Team MarcusNoirin called Bea a "nosy cow" and Sophie a "two-faced bitch" in a heated row in the Big Brother house.
The 25-year-old was angry after she found out that Sophie, Freddie, Bea and Siavash had all given their support for Marcus in the Diary Room last night.
Marcus and Noirin are up against each other for eviction but most of the house seemed to be behind Marcus.
Noirin, took Issac along with her and demanded an explanation from Bea. At first she tried to deny that it had happened but that just made the Irish lass furious.
Noirin said: "Don't make us out to be idiots.
"It's none of your business you nosy cow."
Noirin then called Sophie a "two-faced bitch" for taking part in the Diary Room support for Marcus.
Bea then told Isaac that he was an idiot for believing Noirin's explanation that her fling with Siavash was just a drunken kiss.
Noirin then shouted: "P*** off. I'm not talking to you and I don't want to hear what you are saying."