Sticking to the "Punk: Chaos to Couture" theme, Richie rocked gray-blue hair styled in a short updo on the red carpet at the Metropolitan Museum of Art in NYC on Monday, May 6.
The stylish mom to daughter Harlow, 5, and son Sparrow, 3, wore a long white embellished Topshop dress that showed off her slim figure. Richie accessorized her look with dark lipstick and spiky earrings.
Before hitting the Met Gala, Richie teased on Instagram that she would be dyeing her hair. "Hair time Met Ball," she captioned a shot of hair color.
Click here to view the live stream (+ archived version) of the 2013 Met Gala on Vogue.com.
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This article originally appeared on Usmagazine.com: Nicole Richie Rocks Short Gray-Blue Hair, Long White Topshop Dress at Met Gala 2013