Mermaidcore has emerged as the defining fashion trend for summer 2026, offering a sophisticated take on beach chic that channels the allure of mythical sea creatures without descending into costume territory. According to fashion writer Jess Cartner-Morley, the trend romanticizes summer with a cinematic vision of beach life, positioning the wearer as the main character. It updates the beloved dress code Americans call "vacation formal" and Brits refer to as "going for dinner on holiday."
What Mermaidcore Is Not
Cartner-Morley emphasizes that mermaidcore should not be confused with dressing for a children's pirates and mermaids party. Designer Matthieu Blazy's recent Chanel show, held on the Atlantic shore of Biarritz, exemplified the trend's sophistication with sea anemone embroidery, seahorse jewelry, and a closing dress of seafoam sequins. The vibe is more Daryl Hannah in Splash than selkies and sirens, focusing on clothes for sipping rosé with a sea view rather than Ariel cosplay on a bouncy castle.
The Silhouette: Slinkiness Over Volume
The mermaidcore silhouette shifts from airy kaftans or maxidresses to narrower dresses or long skirts, and from sporty beach shorts to palazzo pants that are snug at the hip and fall wide to the floor. This long-and-narrow shape is not the most practical for beach volleyball, Cartner-Morley notes, but it excels for graceful lounging. For those who insist on exertion or have young children, fishing-net mesh or crochet work as shorter cover-ups, while a shell necklace can add glamour to a morning spent applying sun cream.
Restraint: The Key to Elegance
The line between mermaidcore and fancy dress lies in restraint. Piling on every pearl and sparkle risks looking like a fall into a Sea Life gift shop. The trick is to borrow from the ocean's palette and texture without dressing as an actual resident. The most elegant mermaid shades are washed-out blues and green-tinted turquoises that look artfully faded by salt and sunshine—a slip dress in pale aqua, or a sheer shirt in lagoon blue or seafoam green. The goal is to channel the spirit of a woman who has spent the afternoon drifting through a secluded cove, not one who just escaped a kids' TV show.
Texture and Footwear
Texture matters as much as colour. Crochet, mesh, raffia, and anything with a subtle shimmer evoke the seaside without screaming it. A gauzy skirt catching the breeze has a magical quality, looking different every time the light hits it. Footwear trends are nudging toward jelly shoes, truly amphibious sandals that can paddle through rock pools, survive a sea dash, and still take you to lunch. This fits the mermaidcore aspiration of moving seamlessly between land and water, embracing the dream of a carefree summer.
