“We show you what never goes out of fashion”
Since 2014
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Rooted in practicality but with an appreciation of  beautiful design, COSSIE+CO does what so many swimwear brands don’t – creates pieces that look great, fit perfectly and work for real life. Every style adheres to the magic formula of classic silhouette, flattering cut and expert construction. Add to this a stylish colour palette and it’s no wonder the brand is a firm fashion-insider favourite.

We love that each costume is made using the brand’s signature double-lined honeycomb fabric that gives natural support without underwire or panels. A matt finish means pieces can be worn on the beach then restyled as a bodysuit and teamed with a cover-up for dinner afterwards.

This summer, we have collaborated on two exclusive styles: the Ashley, a subtle wrapover style swimsuit, and the Jessica and Lucinda bikini, a flattering square-neck bikini top and a classic high-waisted bikini bottom. Designed with confidence-enhancing comfort and fit, both are guaranteed to be forever additions to your swimwear drawer.

Crafted with care and thoughtful design, COSSIE+CO swimsuits will have real longevity in your beach wardrobe.

A self-confessed thalassophile, Isobel Elphinstone has always had a special interest in swimwear. However, it was after having children that the former fashion executive noticed a gap in the market for functional, well-made pieces that could stand up to action-packed holidays but still feel luxurious and stylish to wear. In 2018, she launched Cossie+Co, a luxury British swimwear brand offering a perfectly formed capsule collection of forever swimsuits.

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