Neilson Barnard/Getty Images for Tiffany & Co.

WHAT SHE WORE The actress piled on more than $600,000 worth of Tiffany & Co. jewels to accent her off-the-shoulder silk gown at the Blue Book Ball.

WHY WE LOVE IT Does it get any more classic American than Gwyneth Paltrow in Ralph Lauren and Tiffany's?

CELEBRITY: Gwyneth Paltrow

DESIGNER: Ralph Lauren

TREND: Blue

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Gwyneth Paltrow

Gwyneth Paltrow was a classic in Ralph Lauren

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