Natalie Portman sheds conservative image in nude Dior ad

Natalie Portman may have worn a long-sleeved, high-necked dress on her wedding day, but in new ads for Dior, the typically conservatively-dressed star is revealing an entirely different side of herself -- and a lot of it. For the French company's makeup line, Diorskin Nude, the Oscar-winning actress goes, well, nude — except for some strategically-placed arms. In one eye-popping shot, Portman, who gave birth to son Aleph last June, is topless and draped over a chair, exposing her back (and almost her backside) while giving the camera a sultry stare. The only thing she has on? Dior's 169 Grege lip color, her favorite from the line of eight different shades.

"I chose the color Grège because it's the one I'd pick to wear myself," the "Black Swan" actress says. "The number [169] contains different dates that are important to me and my family." Portman's sexy ad campaign isn't entirely gratuitous. Proceeds from her favorite shade will benefit the Free the Children Association, a charity near and dear to the heart of the new mom. This also wasn't the first time she posed au naturale for Dior. In January 2011, Portman went topless — except for a headband — for its Miss Dior Cherie perfume promo.

The 31-year-old showed a lot less skin when she married ballet dancer Benjamin Millepied on August 4 in a traditional Jewish ceremony at night overlooking the Pacific Ocean in Big Sur, California. Portman walked down the aisle in a super-conservative Rodarte dress that covered her arms and neck complete with a veil and white ballet flats.

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Next, she plans to become a French citizen, just like her new husband. "It would accomplish the Francophile dreams of my father and myself," she told Madame Figaro magazine."I lived in Paris when I was 12 and my father gave me the name Natalie as an homage to Gilbert Bécaud's song. Everything in my life has drawn me towards a French family."

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