Welcome to our new Spring/Summer 2023 Collection! Everything is perfectly detailed in custom and retro prints, and embellished in hand-embroidered beading and embroidery. Absolute luxury at it's finest.

Our Purpose

Is not only to create beautiful swimwear that is of the highest quality and a reliable source for amazing fit and style, but to create awareness and support the efforts to clean our oceans and beaches in order to help save, heal, and preserve the life that gives us life. 

The Dakota

In Retro Red Floral

The Bridget

Vintage with Modern Twist

The Alina

Chic and Sophisticated

The Kelly

Sets Are Totally In

The Joslynn

Two-Tone Floral

The Alison

Starburst Vibes


We're Proud of What We Do

With each swimwear purchase, we will donate part of the profits to a non-profit organization to clean our oceans, that is developing and scaling technologies to rid the world’s oceans of plastic. Their aim is to put themselves out of business once the oceans are clean.

Cleaning Up Our Oceans


Meet the Designer

With 10+ years of fashion industry experience at the likes of Tory Burch, Kate Spade, & Lulu Frost, this vivacious Texas-native turned New York City local is proud to present her swimwear brand: Origin of Oceans (OOO). Kathleen was inspired by her adventurous travels and the beautiful women who inspire her daily: friends, family, colleagues.

Tis the Season

Give the Gift of Origin of Oceans this Holiday Season


We Have Arrived

Behind the Scenes of Our Campaign Shoot

Our Launch Event in South Hampton

Picnic at the Chateau

In November 2021, Origin of Oceans officially touched down for a 3-part fashion show + cocktail party at a beautiful sprawling Southampton Estate. The Hamptons have a special place in our hearts, with our designer Kathleen Bily & much of our team having spent most of the last 10+ summers there. A big thank you to Yale Fishman of Hamptons Luxury Estates for opening his home in support of this exciting launch. By Niche / Lindsey Higgins produced the event and we were honored to include several wonderful brands in runway styling: Mitzi New York, Kimberly Pucci, Bitsy Stone King Shop, Gloria Lee, Sorabyrd & Goldfine Jewelry.

The Runway is Out East

One of the most unforgettable moments of our launch party was the poolside runway fashion show. The live-feed of the runway was cast on the huge backyard cinema, viewable from nearly every angle of the house. It was a larger-than-life experience. We enjoyed the evening with our closest family, friends, and early brand supporters from The Hamptons and New York City. Big thank you to Good Guice Coconut Rum, A Shore Vibe catering, Maison Lapin Wines, Talkhouse canned cocktails for giving our cherished guests special sips & bites for the evening. DJ Benu kept the beats going and our toes tapping. We couldn’t have dreamed of a more perfect launch for Origin of Oceans!

Every Fit You Need

Every type of coverage for every type of bum!

What our OOO Babes Are Saying
What our OOO Babes Are Saying
"The suits are so comfortable and allow me to have fun freely! Loved the cross over top so much and HONORED it is now named after me!"
— Izabella Vilarchao
Izzy Top
What our OOO Babes Are Saying
"I'm obsessed with the suits. The style is super flattering and the prints are fun. Going to wear them everyday when I'm in Puerto Rico :)"
— Maddie Jones
What our OOO Babes Are Saying
"I knew Kathleen (who practically lives in a bikini!) would create a beautiful swimwear line! I was drawn to the feminine prints and was sold after trying them on - the cuts are SO flattering! I particularly love the Ariana Top, as the shape adds a little oomph to my smaller bust and makes me feel extra sexy."
— Christina Mannino