16 It Girl–Approved Halloween Costume Ideas

Kat Collings

How does one find the perfect Halloween costume—you know, the one that's equal parts unique, alluring, and impressive? By turning to our seasoned panel of experts in everything cool, the It girls of the fashion world, of course. We're sharing an assortment of ideas from Alexa Chung, Mary-Kate Olsen, and more, including everything from fashionable spins on classic costumes to inspired takes on movie characters. Get a head start on your Halloween costume this year by bookmarking these supremely stylish ideas. Plus, shop the essential you need to re-create each creative look. 

Check out 16 fashion girl–approved Halloween ideas below. 

This post has been updated by Michelle Scanga. 

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