The 26-year-old twins stepped up their appearance for the event at MOMA where they were joined by Vogue Editor-in-chief Anna Wintour.
The sisters wore silky clothing which was of course too big for them, curly-haired blonde Ashley wearing a deep V-neck back maxi dress and Mary-Kate keeping her hair in a bun to pair with her blue layered look.
Ashley Olsen added animal touches to her ensemble with a snake-style bracelet around her wrist and the animal’s skin on her maroon bag.
Mary-Kate Olsen flashed her toes in heeled sandals with her trouser suit and toted a patent shoulder bag.
Both bags were from their popular The Row line, which has helped the pair achieve their iconic style reputations.
They were given the Fashion category’s Innovator of the Year accolade for possessing “an eye for nearly monastic classicism that’s redefining American luxury”.
Mary-Kate Olsen has been dating Olivier Sarkozy – the cavalier half-brother of former French president, Nicolas Sarkozy – despite him being 20 years her senior.
She also has a history of dating high profile men.
Mary-Kate Olsen was linked romantically to Heath Ledger before his death and dated Greek shipping heir and Paris Hilton’s ex Stavros Niarchos.
Other famous faces in attendance at the WSJ bash included actress Julianne Moore, who covered up in a black dress but flashed hints of skin with a sheer panels.
Revenge star Christa B. Allen opted for the androgynous look in an ebony suit.
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