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We've only been half-watching it up until now, but it's all kicking off in the Celebrity Big Brother house!

A night of drinking turned into a row between Playboy twin Karissa Shannon and Denise Welch after the Loose Women presenter tried to pull down the model's pyjama bottoms. Karissa snapped at Denise: "I'll forgive you tomorrow but I'm pissed off."

The 22-year-old then took her frustrations out in the diary room, telling Big Brother she wanted to leave and was ready to sue to the programme for sexual harassment, pointing the finger of blame at X Factor reject, Frankie Cocozza.

She said, 'I'm done with Frankie's sexual harassment. He sexually harasses me every day, and I want to go home.'

And despite making a living flaunting her body for Playboy, Karissa argued that in the house, she's far more conservative.

'I'm one of the most reserved people in the house, I'm the classy woman of the house. I do not do that type of stuff. You're gonna show my ass on TV, that's for sure. I'm not cool with that so I'm going to sue you guys. I don't flash my ass, or flash my tits. I feel disrespected.'

Her twin Kristina joined her in the diary room for a supportive hug but that was not the end of the fighting. Later, page 3 girl Nicola McLean decided to tell Denise exactly what she thought of her, saying how embarrassing she thought it was that Denise had gone topless in the hot tub with Frankie last week.

'I was a Page 3 girl for a lot of years, and you flash your boobs openly on telly and you're cool with that? I'm not.'

Frankie jumped to Denise's defence, telling Nicola that she'd changed since Natalie Cassidy was evicted this week, to which Nicola replied, 'I'm not speaking to you.'

Luckily, in the morning, when everyone was more sober, Denise apologised to Nicola and the pair seemed to come to a truce. But we doubt this will be the end of the fighting in the house!