D.C. has a bounty of vintage boutiques these days, and Treasury has managed to stay unique. What do you both bring to the table in terms of what you sell and your aesthetic?
Katerina: "Our aesthetic is clearly defined and unique, and it's based purely on what we love. We handpick each item in the store and appreciate its cultural value. We're rooted in natural fabrics, exquisite drape, and utilitarianism — but we're romantics at heart."

What has been the biggest challenge of being young, female entrepreneurs?
Katerina: "Being young and female! Sometimes, people don't take us seriously as business owners, but overall, we're determined enough that it's not a problem. The obstacles we've run into have centered around the fact that we started out doing this part-time, and it was hard to keep all the balls in the air. But now, it's blossomed into a beautiful full-time venture."

On Cathy, left: Vintage print dress and metal belt, A Détacher sandals. On Katerina, right: Vintage Lanvin top, Lithics necklace, vintage Armani palazzo pants, vintage Bally chelsea boots.