Paris Fashion: Kristen Stewart Rocks Leather Pants at Balenciaga, Mila Kunis Does Demure Dior

Pascal Le Segretain/Getty Images

Mila Kunis – Dior’s new handbag brand ambassador -- was hard at work in Paris this week. The Black Swan actress had a primo spot in the front row of the Dior Fall/Winter RTW show, seated right next to Dior CEO Sidney Toledano and his wife Katia.

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But wait, there was more hard work! She also had to pose for a handbag ad, wearing a stunning pink Dior dress, while on a boat in the Seine, the iconic river that divides the City of Light into two distinct Left and Right Banks.

How horrible to have to shoot a fabulous fashion ad in Paris. Poor kid. But she has to take comfort that others hae survived the same drill: Dior faces Marion Cotillard and Natalie Portman.

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Paris is literally lousy with A-list celebs for the shows that started on Feb. 28. Salma Hayek and Kristen Stewart  -- the new fragrance face for Balenciaga -- were spotted yesterday (Mar. 1) wearing Balenciaga at the Balenciaga show.

The Twilight actress rocked a pair of skinny black leather pants with a sleeveless blouse. She was joined in the front row by another avante garde dresser, French actress Charlotte Gainsbourg. And guess who was sitting next to her? Vogue editor Anna Wintour. Not only that, but poor Kristen had already been in Paris last month doing a fabulous photo shoot for Vanity Fair.

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Wonder if that upcoming editorial spread will be timed to the final Twilight film Breaking Dawn Part 2  (due out Nov 16) or her new film Snow White and the Huntsman, (due out on June 1)? 

One thing we're pretty certain of: She will be wearing some fabulous Balenciaga.