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WHAT SHE WORE At "An Evening Honoring Karl Lagerfeld," Chastain toasted to the designer in a black-and-white tweed Chanel Couture with floral appliques, styling it with black accessories.

CELEBRITY: Jessica Chastain

DESIGNER: Chanel

TREND: Black

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Jessica Chastain

At "An Evening Honoring Karl Lagerfeld," Chastain toasted to the designer in a black-and-white tweed Chanel Couture with floral appliques, styling it with black accessories.

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