12 Prettiest Dresses of 2012

Mike Marsland/Wireimage

Jessica Chastain

EVENT: Madagascar 3's Cannes premiere

DESIGNER: Giorgio Armani

WHY WE LOVE IT: The actress complemented her gown's Old Hollywood glam with side-swept curls and scarlet lips.

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Best of 2012

Jessica Chastain

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12 Prettiest Dresses of 2012

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Jessica Chastain

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