Karwai Tang/WireImage
Faith Cummings
Nov 22, 2016 @ 9:15 am

Marion Cotillard is a Dior woman through and through, but it only felt right for her to don a look from a British designer at the London premiere of Allied on Monday night at Odeon Leicester Square. She chose one of the best around for the occasion and slipped on a custom dress from Stella McCartney.

The actress attended the U.K. premiere of Allied in a custom Stella McCartney LBD with a flattering waist seam that concealed her baby bump, a lower thigh-grazing length, and silk train back. Gold mirror pumps and teardrop-accented Chopard earrings completed the ensemble.

Mike Marsland/WireImage

VIDEO: Watch the Steamy Trailer for Brad Pitt and Marion Cotillard's Allied

Her dress put a whole new spin on the classic LBD with a flattering waist seam that concealed her baby bump, a lower thigh-grazing length, and silk train back for an added dose of glamour.

Karwai Tang/WireImage

Cotillard accessorized with a single, statement-making teardrop accented Chopard earring and gold mirror pumps. She kept her beauty look minimal to let her head-turning dress and accouterments play centerstage.

RELATED: Marion Cotillard Designs a Line of Ethically Sourced Jewelry for Chopard

The French beauty was joined on the red carpet by Allied co-star Brad Pitt, who wore color-coordinated dark shades and seemed satisfied by their red carpet–slaying looks.

John Phillips/Getty

Allied hits theaters in the U.S. Nov. 23, so we may only have a few more looks from Cotillard for the film's promotional tour. We're savoring every stylish moment.

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