Jennifer Mitchell/SplashNewsOnline.com

WHAT SHE WORE Paltrow signed copies of My Father's Daughter at an N.Y.C. Williams Sonoma rocking a knit Vionnet minidress and strappy Aperlai sandals.

CELEBRITY: Gwyneth Paltrow

DESIGNER: Vionnet

TREND: LBD

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Gwyneth Paltrow

Gwyneth Paltrow in Vionnet

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