Chloë Sevigny shares the story behind her favorite dress of all time.

Chloe Sevigny 
Credit: Arthur Mola/Invision/AP/REX/Shutterstock

During my senior year I was super-alternative. It was 1993, and I had a shaved head, a nose ring, and a very androgynous way of dressing. Basically, I was a real weirdo at my conservative Connecticut high school.

But for some reason I wanted to wear something elegant to my senior prom. So I started looking through some of the dresses my mom had saved from her school dances, and I was immediately drawn to this one because of its unusual shape. Turns out, it was also the dress my mom wore to her prom in the '60s.

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Credit: Brian Henn; styling: Renee Yan

I got excited because I knew nobody else at school would have a dress like it. And my mom got even more excited because I finally wanted to wear something feminine. It had no label or lining in it, but it fit me perfectly when I tried it on. Somehow it felt classic and modern at the same time.

When my mom wore the dress, she accessorized with low pumps and a high updo. My take included a homemade velvet choker, stockings, a garter belt, and these perfect velvet heels (they weren't right for spring, but I loved them anyway).

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Credit: Courtesy Chloe Sevigny

My date, Joey, dressed a little more traditional, but he had red tips in his hair, so he brought a bit of alternative too. We had a great night dancing. A lot of people rag on prom, but I always thought it was meaningful. It was like my very own Pretty in Pink moment.

—As told to Jennifer Ferrise

Sevigny stars in Lizzie, in theaters September 14.

For more stories like this, pick up InStyle's September issue, on newsstands and available for digital download now