Natalie PortmanIt sure has been a busy couple of months for Natalie Portman, engagement and pregnancy with fiancé Benjamin Millepied, the stupendous success of 'Black Swan', a Vogue cover where she confesses people were shocked by her lesbian scene in 'Swan' and now a sultry debut as the new face of Dior fragrance.

In Miss Dior Chérie ads that will hit print and television in March, a flirtatious Portman poses topless with a glance over her shoulder, sporting only a simple black bow that is a nod to the fragrance's packaging in her tousled hair, and a decidedly naughty look on her face.

French fashion house Dior hedged its bets on the 29-year-old actress when signing her this past summer, and the strategy couldn't have turned out better, with the actress striking continual press coverage in recent weeks, including whispers that she could take home an Academy Award for her performance in 'Black Swan', on the set of which she met future hubby Millepied.

The already-svelte Portman lost 20 pounds during filming, due to a merciless schedule that included six to eight hours a day of classical ballet dancing and training.