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OTRC: Natalie Portman: 'Black Swan' ballet thriller 'hard' for mom

Natalie Portman speaks to KABC Television, OnTheRedCarpet.com's parent company, in November 2010 to promote 'Black Swan'.

Natalie Portman says her parents were supportive of her current role as a troubled ballerina in "Black Swan", Darren Aronofsky's thriller about the dark side of the arts, which sees her sharing a sex scene with actress Mila Kunis, but that some parts were tough for her mother to watch.

In the movie, which is set for release on Friday, Portman's character is picked to play the lead in "Swan Lake" and deals with a manipulative dance master as well as a rival ballerina, portrayed by Kunis.

"My parents were really, they've always been really supportive of what I do," Portman, 29, told OnTheRedCarpet.com.

"They really understand the arts also, they're not prudish at all," she said. "I think for this kind of thing, they were really proud and happy for me. My mom, she was like, "Can you please do a comedy next? It's hard for me to see you suffering.'"

It was reported in November that Portman and her college friend Laura Moses are reportedly trying to sell a script for a comedy film they have written that is being touted as the female "Superbad". Their project, called "BYO," short for "Bring Your Own", tells of two women in their twenties who throw a party that calls for women to bring an eligible bachelor with them.

Portman told OnTheRedCarpet.com in mid-November that starring in "Black Swan" fulfilled her childhood dream of becoming a dancer.

Both Portman and Kunis lost about 20 pounds for their roles and say they have since gained it back. Portman said she indulged in carbs, such as bread and pasta, once filming was over, while Kunis said she made a beeline for the popular Chinese food chain Panda Express as well as In-N-Out Burger.

Check out a trailer for "Black Swan", starring Natalie Portman and Mila Kunis:

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