Natalie Portman’s performance as a tortured and competitive prima ballerina earned her another film award last night, as the Screen Actors Guild named her Outstanding Female Actress.

The Jerusalem-born actress, who has already picked up a Golden Globe for her star turn in Black Swan, has been critically acclaimed and is expected to win her first Academy Award next month.

She was previously up for the Oscar for Best Supporting Actress for the film Closer in 2005, but lost out to Cate Blanchett.

Ms Portman, who is expecting her first child later this year with her partner, Black Swan choreographer Benjamin Millepied, said when she collected the trophy: “Thank you to…my parents who always taught me to work my hardest and never be an a***ole. It's never acceptable"

Black Swan, directed by Jewish filmmaker Darren Aronofsky, is up for five Oscars this year.

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Watch a clip from Black Swan here