With Brad Pitt and Marion Cotillard as your stars, why not make their costumes seductive?

Elegant and impeccably groomed, Marianne Beauséjour glides into the ballroom, her soft green satin gown instantly identifying her as a woman abundantly aware of her power and charisma. The floor-length gown commands a critical scene in "Allied," a World War II drama by director Robert Zemeckis...