The pair went head to head (again) after Kim apparently accused Nicola of being a liar.
That was not an accusation she was going to take quietly.
"F**king liar? Liar?" snapped Nicola. "Tell everyone how I'm a liar, Kim? Tell everyone how I'm a liar?!"
She raged: "You're a liar, you're a fraud, you're a liar and you couldn't keep up your hype and now you're just looking like an idiot. FACT.
"You're looking like the idiot," responded Kim.
"SHUT UP!" shouted Nicola, "LIAR!"
"You stupid little woman," laughed Kim.
Later, when things had calmed down a bit, Nicola told the other housemates: "I've asked her what the lie is but she hasn't got one.
"She's got nothing. I don't f**king need to lie about any of you, none of you do I need to lie about."
Nicola was eventually able to shed some more light on the exact confrontation between her and Kim.
She spilled to the other housemates: "She said to me that I told Chloe that she [Kim] said I was a bad mum. NO! I didn't. Chloe heard what she [Kim] said in the task and Chloe interpreted it as a bad mum, because if you say 'Your kids aren't proud of you', what are you saying?"
The row, in the fallout of nominations, is expected to air in this evening's highlights show at 9PM on Channel 5.