July 15, 2015 04:56 PM

Tilda Swinton is an unlikely woman to disavow fashion. As striking as she is chic, the Oscar-winning actress regularly lands on best-dressed lists and nabs collaborations with high-end couture visionaries like Rolf Snoren and Viktor Horsting of Viktor & Rolf.

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But Swinton swears that she is more of a comfort queen than a fashion icon. She reaches for “pure function [instead of fashion],” she told PEOPLE at the world premiere of Trainwreck Tuesday in N.Y.C. “I’m really not that interested in fashion to be honest or knowledgeable about it. I tend to wear clothes by my friends and [choose] comfort every time.”

In Amy Schumer’s Trainwreck, Swinton looks nearly unrecognizable as a blisteringly insensitive magazine editor. She said that her funniest memories of her time on the set are of watching comedy’s finest laugh at each other’s jokes. “I think there’s something really special about seeing…Vanessa Bayer and John [Cena] and Bill [Hader] and Amy crack each other up.”

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When you head to the theater to see Trainwreck, pull out those sweatpants in Swinton’s honor — you may not look as effortlessly elegant as Swinton, but at least you will be equally as comfortable.

Are you surprised by Swinton’s fashion revelation? Are you a fan of her style? Sound off below.

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–Emily Zauzmer

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