Following the incident, she went in the diary room and told Big Brother: "I want to leave, I'm ready to go home now.
"Denise just tried to pull my pants down for no reason.
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. My management's not going to be OK with this."
Denise apologised to Karrisa and also got into an argument with Nicola McLean about the incident.
But Karissa and her Twin Sister Kristina could be axed from 'Celebrity Big Brother' tonight (25.01.12) as they are one of the favourites to be voted off show after fans turned on them.
Referring to their previous photo shoots for Playboy magazine, one wrote on twitter: "How can she be reserved when one Google search has found at least a dozen pictures of her with her arse out?"