Natalie Portman bares all for Christian Dior Parfums. As the new face of the brand, Portman, who ended a wonderful 2010 with the announcement that she was pregnant and engaged to choreographer Benjamin Millepied, bared all for the promotion of perfume Miss Dior Cherie.

The 29 year old actress and star of Black Swan took it all off for renowned fashion photographer Tim Walker, wearing only a black bow tie in her hair. The ravishing brunette protected her modesty with a slip of hair and her hands covering her chest.

It was announced in June 2010 that Portman was to become the image of Christian Dior Parfums. She joins an elite group of Hollywood actors and actresses who’ve worked with the renowned brand including Charlize Theron, Sharon Stone and Monica Bellucci.

Claude Martinez, President and CEO of Christian Dior Parfums, said at the time, “We are very pleased to have Miss Portman as the image of our creative house. She will symbolise the luxury that Dior has.”

The busy actress is readying herself for a big year in 2011. Not only is the baby on its way and a possible Best Actress Golden Globe, she has three films coming out in the next five months. No Strings Attached will appear in US cinemas on January 21, while Your Highness and Thor will debut in April and May respectively.

Natalie Portman posing for Dior, 2010