Showbiz
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The 32-year-old can be seen posing nude, save for a Versace bag, high heels and sunglasses, in several photos for the advertising push, reports WWD.
Donatella Versace called the Mad Men star "deeply sensual" and praised her as the "perfect Versace woman".
"I am always on the lookout for the next Versace blonde… and in January I feel I have found a perfect Versace woman for the 21st century," the designer said.
She added: "She is chic and elegant but deeply sensual too."
Mario Testino, who recently shot Prince William and Kate Middleton's engagement photos, photographed the black-and-white Versace ads in London.
More: January Jones, Showbiz
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