KZ_K Studio: The New York Brand Redefining Fashion Through Multi-Functionalism

KZ_K Studio is a New York City based fashion brand founded by Polish born fashion designer Karolina Zmarlak and her business and life partner, Jesse Keyes. The brand is known for its modernist design philosophy, which emphasizes the use of technologically advanced materials integrated into minimally stylized, functional forms.
Efficiency and versatility serve as guiding principles for KZ_K Studio, with a focus on minimizing excess and maximizing utility. This approach results in a light, refined, and essentially minimal product form, while still maintaining a sculpted silhouette. The brand’s design discipline is grounded in multi-functionality, with collection pieces technically and precisely developed for convertibility or full reversibility.
A commitment to responsible manufacturing is evident through the brand’s focus on client relationships and mindful wardrobes. KZ_K Studio strives to minimize ornamentation, bypass fleeting trends, and construct garments designed to last a lifetime of use.
Karolina Zmarlak’s background in fashion design, paired with Jesse Keyes’s training in architecture and entrepreneurship, brings a unique blend of skills to the brand’s overall design approach. KZ_K Studio’s garments are made in New York City, with a strong focus on high quality craftsmanship and close attention to detail.

The brand’s aesthetic is defined by clean lines, sculptural forms, and a neutral color palette. KZ_K Studio’s collections feature a range of garments, including dresses, tops, pants, and jackets, each designed with multi-functionality and versatility at its core.
A Vision Rooted in Architecture and Purpose
KZ_K Studio has earned recognition for its innovative approach to fashion design, with features in publications including Vogue, Elle, and Harper’s Bazaar. The brand has also been worn by celebrities including Cynthia Nixon, Karolina Kurkova, Sigourney Weaver, and Jodie Foster.

We spoke with Karolina to learn more.
How did the brand come about?
I was on the train home with my partner, Jesse Keyes, from his architect grandfather’s place in Washington, DC, on January 1st, 2009, when we conceived of a fashion line that would hew to the tenets of multi-functionalism, a foundational notion within the discipline of architecture. We wanted to create pieces that could be worn in many variations, individually and together, in a series of alternative and creative ways that could fit the unique functional and aesthetic needs of modern women. Up until that point, I had developed a made to measure business with Jesse, but as the Great Recession hit, this new concept allowed our clients a similar kind of personalization while also being oriented toward creating real value: buy one piece and wear it in three ways.
Why are you so passionate about it?
I suppose passion is inherent to any person’s vision quest, if they happen to have one. I only wish that everyone did have one, because then life isn’t only about passion, it becomes about responsibility, technical capacity, purposeful productivity, and ultimately, a genuine connection made between the maker and the client, and just as important, though less often appreciated, the reverse as well.
What do you see for the future of the brand?
Long term relationships with our fabric creators, our factory experts, and our clients. Slow fashion. Long term relationships, until death do us part.
Designing With Intention, Not Impulse
What continues to set KZ_K Studio apart is the discipline behind every design decision. Rather than chasing seasonal trends, the brand treats each garment as a long term commitment, one built to adapt alongside the person wearing it rather than fall out of favor with the next collection. That philosophy, rooted as much in architectural thinking as in fashion, has quietly positioned KZ_K Studio as a genuine alternative to the disposability that defines so much of the industry today.

















