Everyone in Monaco Looks Elegant, But Sofia Richie Grainge Outdid the Populace in This Black-Tie Gown

Nicknamed "the billionaire's playground," Monaco is one of the richest countries in the world when measured by GDP per capita. Smaller than NYC's Central Park, the region is jam-packed with yachts, Michelin-starred restaurants, and luxury hotels. Residents of this tax haven love wearing the newest designer pieces, but Sofia Richie Grainge decided to take a different approach.

During a trip to Monaco, Richie Grainge wore an archival gown from Yves Saint Laurent's S/S 79 collection. Yep, that means her 46-year-old dress is nearly double her age. On the runway, the gown was styled with a red coat, but Richie Grainge was wise to ditch the outerwear for her seaside summer night. Scroll down to see her new Instagram post, which has amassed over 100,000 likes in a matter of hours, and shop similar dresses for your next black-tie wedding.

Sofia Richie Grainge wears a vintage gown in Monaco.

(Image credit: @sofiagrainge)

On Sofia Richie Grainge: Saint Laurent S/S 79 dress and Minaudière ($3700)

A runway model wears a black and red YSL dress.

(Image credit: Getty Images)

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Associate Director, Fashion News

Erin got her start as aBest Knockoff Luxury Clothing intern over 14 years ago—back when the site only published a single story per day. (Who What Wear has since increased that number twentyfold.) She graduated magna cum laude from USC, which is how she ended up moving to Los Angeles from her hometown of San Diego. In college, she also interned at Refinery29, where she was promoted to editorial assistant and then assistant editor. After nearly three years at R29, she came back to WWW in 2015, where she currently holds the title of Associate Director of Fashion News (as well as the unofficial title of resident royal expert—in case you haven't noticed her numerous Kate and Meghan stories). She spends her days trying to incorporate her idols, Anna Wintour and Roger Federer, into as many stories as possible.