'Celebrity Fit Club's' Harvey meets his match?

No-nonsense Celebrity Fit Club drill instructor Harvey looks to have met his match on the US version of the show.

Contestant Mia Tyler - the model daughter of Aerosmith singer Steve - has regularly been involved in rows with the fitness coach.

In the most recent show, Mia lost 5 lbs to weigh a total 205 lbs - 1 lb better than her target weight loss - but Harvey was spoiling for a fight.

"Do you think your husband likes you the way you are?" he asked, to which she answered affirmatively. "Do you think he'll like you when you lose the weight, as much as he does while you're fat?" he continued.

"Yes," Mia repeated, adding: "Wait, what did you call me? Fat? So you're telling me that girls my size aren't sexy?"

"No, I'm not saying that," he backtracked, "I'm saying that I think he'll like you a whole lot more..."

"I think you have issues," she interrupted. "I think you've got more issues with your body size and being fit and you care too much. I think that's not good for your head - I think you need to lighten up and be a little easier on yourself. Me being this size doesn't make me any less sexy. I could be 800lbs and still be sexy!"

"You're telling me that you could be 800lbs and be sexy?" Harvey challenged. "You're smoking crack!"

Mia continued: "I'm saying that people like you in the world who say that people aren't sexy like me, being my size.. that's what causes people to be bulimic and anorexic and want to go get their noses done and have their lips all plumped up. There's nothing wrong with being yourself."

"I guarantee if you weighed 800lbs you would not look sexy," he repeated, but Mia was on a roll: "I guarantee that there's a million people in this world who would say otherwise and I couldn't give a f*** what you say!"