After an award season full of spot-on ensembles — which culminated in a gilded and gorgeous McQueen gown at last weekend's Oscars — you might be surprised to learn that Jessica Chastain's a relative newcomer to the red carpet. The redheaded beauty solidified her A-list status in Hollywood with performances in both the Oscar-nominated The Help and the critically acclaimed The Tree of Life. In our world, this meant jaw-dropping appearances at film premieres and parties to accompany the films' releases. We're treated to a season's worth of awards-worthy confections as Jessica showed her affinity for bold color, ladylike silhouettes, and a love of designers from Balenciaga to Calvin Klein. Her red-carpet history may not be as expansive as some, but with a standout showing of cocktail frocks and gorgeous floor-length gowns, she proves she's got the fashion chops to hang with the best of them. Click through to see Miss Chastain's dazzling red-carpet transformation.