A Lesson in Fashion Math, Courtesy of Alexa Chung

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If you're a student of Alexa Chung's style, have we got a doozy for you! The Brit was out shopping in a quintessential Alexa outfit: a plaid mini with a Peter Pan collar and voluminous short sleeves. For accessories, she picked all-black pieces that we've spotted on the street style star before — and prove a perfect lesson in the art of fashion math.

Charlotte Olympia's kitty flats, while pricey at just under $600, have proved their mettle when you think about the cost-per-wear breakdown (we're betting she's worn them at least 30 times, working out to $20 an outing). The same goes for her classic quilted Chanel, though the numbers are likely a little less wallet-friendly.

Can you imagine yourself out this weekend in Alexa's outfit? To get you ready, we've found similar pieces you can click to buy now.