Denise then went and played a prank and the mother of all fights ensued.
The Loose Women presenter tugged Karissa's trousers as she danced, and the Playboy twin was not happy. Denise laughed it off and apologised, but the damage was already done.
Frankie took Denise's side, telling Karissa it was just a bit of fun. The Shannon twins were not impressed.
Nicola tried to get Karissa to go outside to let things calm down, but Denise kept on at Karissa, leading Nicola to say: "Do me a favour, if you want it to kick off then I'll let her back in!"
Nicola let rip, saying: "I was a page three girl for a lot of years, and you flash your boobs openly on telly and you're cool with that? I'm not!"
Denise responded: "I've had a lot of things I've wanted to say to you in the House!"
Cue Nicola: "Say it!" She added: "I'm not comfortable with showing my body on telly!"
Denise replied: "Well I'm not comfortable with you pressing the buzzer without consulting anyone else whether they want their letters from home or not!"
Oh. Em. Gee.
Gareth and Romeo stayed out of it, while Michael agreed with the twins and said it was disheartening to see Gareth upset.
We'll get to see all the action unfold on our TV screens tonight.
This will make for an interesting last week…