This time last season, Sienna Miller was taking her seat in the front row at Michael Kors Collection's Spring 2017 show. This year, she's traded in New York Fashion Week for a different red carpet entirely, premiering her new film, The Lost City of Z, at the Berlinale film festival in Berlin, Germany. She plays the wife of an early 20th century British explorer, Percy Fawcett (Charlie Hunnam), and she was joined on the Berlinale red carpet by Hunnam and former Twilight star Robert Pattinson. In a cowhide coat and slicked back hair, Pattinson looked something like a cartoon supervillain; Miller, on the other hand, in a dreamy Dior gown by Maria Grazia Chiuri, looked every inch the leading lady. Who needs New York Fashion Week when you're already in at the venerable house of Christian Dior?

Sienna Miller in Dior at the Lost City of Z premiere in Berlin, Germany, February 2017.

Pascal Le Segretain/Getty Images

Who: Sienna Miller.

When: Tuesday, February 14.

Where: The premiere of The Lost City of Z, with co-stars Robert Pattinson and Charlie Hunnam and director James Gray, at the 67th annual Berlinale film festival in Berlin, Germany.

What: A black chiffon Dior gown with floral embroidery and dot details with black briefs with the new "J'Adior" logo across the top from the Dior Resort 2017 collection, a berry lip, and black sandals.

Why: Even when designing for a pre-season collection, Maria Grazia Chiuri still lends her eye for delicate embroidery and couture-level detailing to her work. This Resort 2017 gown originally showed with a pair of matching floral-patterned boots and layers of necklaces; Miller styles it to be less boho, more high fashion, for her red carpet walk. It's a decidedly more summery look than we've been seeing around New York Fashion Week, with its sheer bodice and floral motif — and it has us dreaming of warmer days to come already.

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