About Billie Swim

Our collections are designed to make you feel confident, comfortable, and effortlessly fabulous.

Billie Swim was founded from a desire for swimwear that combines exceptional quality with a slower, more thoughtful approach to fashion. Each piece is carefully designed and crafted to last, with timeless silhouettes and considered details that go beyond seasonal trends.

Rather than chasing constant drops, we focus on creating investment pieces you’ll reach for year after year. Swimwear that feels as good as it looks — made for long beach days, sun-soaked escapes, and moments you want to remember.

We believe in less, but better. In pieces that hold their shape, their beauty, and their purpose over time. By producing in small quantities and prioritizing quality materials, Billie Swim encourages a more conscious way of consuming — one that values longevity over excess.

Meet the Founder

Billie Swim was founded by Marjolein Schoot Uiterkamp, driven by a clear vision: to create swimwear that women truly feel good in — not just visually, but in every sense.

With a background product development & sustainability, and a sharp eye for detail, Marjolein approaches design with both intention and intuition. After struggling to find swimwear that felt both elevated and comfortable, she decided to create it herself — pieces that balance clean aesthetics with thoughtful functionality.

Her approach is rooted in simplicity, confidence, and timelessness. Every design reflects her belief that swimwear should enhance, not distract — allowing you to feel like the best version of yourself.

Billie Swim is an extension of that philosophy: understated, refined, and made to move with you through every sunlit moment.