Actors Kathryn Newton and Kyle Allen star as Margaret and Mark in The Map of Tiny Perfect Things, an Amazon Original film directed by Ian Samuels. It's absolutely worth watching if you love a romantic but slightly far-fetched comedy (think Palm Springs for teens) and an onscreen wardrobe that's down to earth and so incredibly easy to re-create. Costume designer Abby O'Sullivan really leaned into iconic themes for inspiration: "So much of mine and Ian [Samuel]'s inspiration came from movies and characters from our childhood, like Say Anything, Back to The Future, and Ferris Bueller's Day Off, which I think gives it a real vintage feel. We needed to pair that vibe with a contemporary script with lots of doubles. Even though the look is vintage inspired, the majority of it was created through ageing, dyeing, sanding, and recutting," Abby shared with POPSUGAR.

Even though, at first glance, you'll probably think Margaret and Mark kind of dress the same, Abby wove in unique little outfit details that match up to their personalities, and Kathryn and Kyle were definitely involved. "Collaboration is key with actors. I find that coming in with strong visuals for yourself and the cast sets a great tone. By developing certain backstories with each actor, you stretch yourself and build what is on the page . . . it's a dance of holding onto your vision with the director and collaborating with your actors to create a unique character. I think we really accomplished that here with Mark and Margaret," Abby said of the costume design process, in which Kathryn (of Big Little Lies, Freaky, and Lady Bird) is well-versed.

Ahead, Abby breaks down each and every element of the looks she created for Margaret and Mark, pointing out specific references you may miss while watching the film. Scroll through to digest some quick fashion facts, and don't forget to shop some of the standout, affordable pieces Margaret and Mark would call essentials.