Jessica Chastain's Oscars Look: 7 Days Of Beauty At The Oscars (#7)

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Jessica Chastain arrives at the Oscars in a custom Giorgio Armani copper-toned silk satin strapless gown at Hollywood & Highland Center on February 24, 2013 in Hollywood, Calif. -- Getty Premium

Jessica Chastain made a major fashion splash on the red carpet at the 2013 Oscars. Now, a look back as we break down her gorgeous look!

The "Zero Dark Thirty" star, who was up for the Best Actress award, turned up at the Academy Awards in a gorgeous custom Armani gown.

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The metallic-toned dress is actually in a copper-hue, according to the design house, and features a mermaid silhouette, highlighted by a fitted bodice and abbreviated train.

The dress has a geometric, lattice-patterned mesh overlay of shimmering white sequins and Swarovski crystals.

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For jewels, Jessica turned to Harry Winston, wearing vintage diamond earrings and vintage diamond and gold bracelet.

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