Natalie Portman strips to her waist in a new photo shoot for Dior that shows just how sexy a woman’s back can be. She doesn’t reveal anything up front, but her bare shoulders say it all–come take me.

Portman, whose “Black Swan” co-star Mila Kunis also reps for the French fashion brand, has been anchoring the brand since last year.

In the latest shoot with famed fashion photographer Mario Sorrenti, the 31-year-old actress is topless laying on a divan while staring seductively over her shoulder. Her dark hair rolls down her shoulders.

A second shot captures her looking into the camera. She uses her arms to shield her breasts.

Check out Natalie’s photos; click to enlarge.

The ads feature Dior’s foundation makeup, which goes on sale in September. The line also includes lip and nail colors all reflecting a nude palette, hence Portman’s daring poses. Port wears a nude shade in the photos.

In the series of ads released in Jan. 2011, Portman also posed topless to promote the brand’s fragrance Miss Dior Cherie.

“I had an aversion to selling things,” she said at the time. “And then I realized both that there could be a company that I would be proud to represent, and also that they would really support the things I believe in.

“It’s really wonderful to have this established, elegant brand willing to do great non-profit work,” she added.

Portman, who is Jewish, was outspoken last year when then-Dior creative director John Galliano made anti-Semitic remarks in a leaked video. She refused to have anything to do with him after that.

“I hope at the very least, these terrible comments remind us to reflect and act upon combating these still-existing prejudices that are the opposite of all that is beautiful,” she said.