Jenny McCarthy says her boyfriend Jim Carrey is a massive yoga fan because he loves her firm butt.
Jim Carrey loves yoga because of Jenny McCarthy's bottom.
The 'Yes Man' star is a huge fan of Bikram yoga - despite having never tried it himself - because he can't get enough of his girlfriend's toned derriere.
Jenny said: "Jim is absolutely in love with Bikram yoga and he's never tried it, strictly on the fact he loves the way my butt looks, although he would love me, I think, at 250lbs."
The 36-year-old former Playboy model - who has dated the comic actor for three years - admits she works hard to keep in shape.
She said: "I do 90 minutes a day. That's Bikram yoga and also healthy food."
However, living with funnyman Jim is causing her healthy-eating regime to suffer because he is trying to gain weight for upcoming movie 'The Three Stooges', where he will play overweight comedian Curly Howard.
She explained to 'Access Hollywood': "He said, 'You know, I'm going to have to gain 40 or 50 pounds for this role.' And I said, 'Oh my god! I get to be dating Curly!' That is the greatest thing ever.
"I hope I don't have sympathy weight because he's going to be eating donuts and I'm going to be going, 'Ooohhh!' Especially during PMS." | 
