Cast member Jim Carrey poses at the 62nd Cannes Film Festival

Cast member Jim Carrey poses with jury member and actress Robin Wright Penn (L) during a photocall to promote the movie "A Christmas Carol" at the 62nd Cannes Film Festival May 18, 2009. Twenty films compete for the prestigious Palme d'Or which will be awarded on May 24.

Bikram butt fan Jim Carrey

Cast member Jim Carrey (R) and Jenny McCarthy arrive for the premiere of the film "I Love You Phillip Morris" at the 2009 Sundance Film Festival in Park City, Utah January 18, 2009.

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."

Jim Carrey's naked days

Actor Jim Carrey arrives at a special screening of "Under the Sea 3D," a documentary narrated by Carrey, at the California Science Center IMAX Theater in Los Angeles February 5, 2009.

Jim Carrey and Jenny McCarthy have naked days.

The couple - who have been dating for around three years - reportedly enjoy stripping off when they are alone together to keep their relationship exciting.

A source said: "When they're alone they prefer to be nude most of the time. They always have an afternoon of naked fun, it spices things up. But of course they are always dressed in public!"

Jim and Jenny are said to have spent most of their recent break in Hawaii - where they splashed out $25,000 to rent a beachfront villa - completely naked.

The pair are not the only famous couple to enjoy naturism.

Christina Aguilera and her record producer husband Jordan Bratman regularly enjoy "naked Sundays".

The 'Dirrty' singer - who has a son, Max Liron, with Jordan - revealed: "We have to be the cosiest couple around. We have something called naked Sundays.

"On Sundays we just do everything in the house, and we're just cosy and laid back.

"We don't need to go anywhere, we're just with each other. We do everything naked. We cook naked. It's important to keep the marriage alive, to spice it up a little."

Jim Carrey comedy for Gong Li

Actress Gong Li is preparing to star in Jim Carrey's latest comedy movie, Gong told talk-show hostess Yang Lan on Sunday.

Film actress Gong Li poses with her trophy after winning an honor at the annual "You Bring Charm to the World" awards held in Beijing on Saturday, March 29, 2008. The awards honored outstanding Chinese people from a variety of fields.

Gong starred in Stephen Chow's popular comedy "Flirting Scholar", but her performance was widely criticized as "wooden". She told Yang that she wished to be a better comedian this time.

Gong, 43, also told Yang that taking up Singapore citizenship was her own business and it was unnecessary to explain it to the public.

She lost her membership of the China Film Association when she became a Singaporean citizen in November.

Gong, Chinese director Zhang Yimou's first leading actress, won fame after performing in a series of Zhang's films including "Red Sorghum" and "Raise the Red Lantern".

Her role in Chinese director Chen Kaige's "Farewell My Concubine" earned her a New York Film Critics Circle Award.

She married her Singaporean husband in February 1996, but rumors about their break-up and affairs with both Chinese and overseas actors have persisted.

Gong starred in "Memoirs of a Geisha" in 2005, "Miami Vice" in 2006 and "Hannibal Rising" in 2007.

Gong also told Yang that she had no ambition to be an Academy Award winner and didn't care whether audiences would remember her.

Yes Man

Yes Man

Carrey and Deschanel at premiere of "Yes Man" at Mann Village theatre

Cast member Jim Carrey and girlfriend actress Jenny McCarthy pose at the premiere of the movie "Yes Man" at the Mann Village theatre in Westwood, California December 17, 2008. The movie opens in the U.S. on December 19.

Jim Carrey promotes his latest movie "Yes Man"

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U.S actor Jim Carrey poses as he arrives for the Spanish premiere of "Yes Man" in downtown Madrid December 11, 2008.