One-piece Swimsuits: The 4 Coolest and Trendiest Models for Summer 2025

From classic solid colors to cut-out models. And then floral, chocolate brown, striped. The catwalks of Milan and Paris have outlined the trends that will dominate the beaches and pools, with particular attention to fine materials, sophisticated cuts and trendy colors.

01.05.2025 by Alessandro Viapiana

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The return of the one-piece to the runways and in the suitcases of the most style-conscious women is not a nostalgic revival, but an aesthetic statement calibrated to the present. After seasons dominated by micro-bikinis and minimalist silhouettes, the one-piece resurfaces with its aura of sensual, almost architectural rigor. The runways of Milan and Paris have relaunched it as an aesthetic icon, reinventing it with cut-outs , deep necklines, asymmetrical shoulder straps and couture details.

One-piece Swimsuit 2025: The Floral Trend

The floral one-piece shown on the catwalk by Chloé plays with saturated colors and macro patterns that seem to have come out of a retro wallpaper and is the statement piece of the season if you want to embrace the floral trend. All made even more sophisticated by bold accessories such as the jewel belt with the word “Paris” and the oversized 70s glasses. A perfect mix of nostalgia and new femininity.

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Chloé’s 2025 Floral One-Piece Swimsuit (Getty Images)

The floral one-piece shown on the catwalk by Chloé plays with saturated colors and macro patterns that seem to have come out of a retro wallpaper and is the statement piece of the season if you want to embrace the floral trend. All made even more sophisticated by bold accessories such as the jewel belt with the word “Paris” and the oversized 70s glasses. A perfect mix of nostalgia and new femininity.

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2025 women's one-piece floral twin set swimsuit

Twin-Set and Rotate’s one-piece floral swimsuits (Courtesy of Press Office)

If Rotate focuses on a pop allure with a pink and orange microfloral print, reminiscent of 60s motifs reworked in a contemporary key, the Twinset swimsuit, asymmetrical and refined, is decorated with a watercolour pictorial floral print.

One-Piece Swimsuit 2025: The Color-Block Trend

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Chanel’s 2025 Black Solid Swimsuit (Courtesy of Press Office)

The solid-color one-piece breaks free from the idea of essentiality to become a manifesto of style, with three signature interpretations that tell different beachwear moods. Chanel offers it in an activewear couture version, with a central zip and an Olympic cut: a sporty yet refined aesthetic. It is an urban runway piece, perfect with shiny loafers and gold necklaces. Gucci instead reinterprets the swimsuit as a heritage icon: in midnight blue sponge with white profiles, it features the iconic GG monogram in relief for a vintage and preppy elegance. Finally, Skims affirms the power of simplicity with a minimal black model, with a clean cut and round neckline.

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Gucci and Skims’ chocolate-colored swimsuits (Courtesy of Press Office)

Zimmermann Solid Brown One Piece Swimsuit Summer 2025

Zimmermann’s 2025 Dark Chocolate One-Piece Swimsuit (Getty Images)

Dark chocolate is the color of the season and is also making its mark on swimwear. Zimmermann offers a model with a very deep neckline and Olympic cut, reinterpreted in a boho look with a maxi skirt in lace and multilayered voile in pastel tones. The result? A look that transforms any day at the beach onto the catwalk. Max Mara chooses clean and elegant lines with a triangle one-piece swimsuit supported by crossed straps and decorated only with a golden “M” buckle. The Calzedonia proposal is sensual, focusing on a satin fabric and a draped construction that sculpts the waist and enhances the décolleté.

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women's swimsuit one piece 2025 dark chocolate brown color Calzedonia trend

Max Mara and Calzedonia’s solid chocolate-colored swimsuits (Courtesy of Press Office)

2025 one-piece swimsuit: sailor stripes or zigzag

Dior 2025 white and dark blue striped one-piece swimsuit

Dior’s 2025 Striped One-Piece Swimsuit (Getty Images)

Between navy stripes, psychedelic crochet and sport-chic from the futuristic Riviera, the marinière trend for summer 2025 is rewritten with couture codes and retro touches. Dior reinterprets the sailor tank top with a one-shoulder one-piece with white and blue stripes, essential and French to the core, to be worn with a saddle bag and headband for a Sixties elegance that conquers the catwalks. Missoni , queen of knitted knitwear, instead signs a colorful and vibrant crochet version, reminiscent of the summer waves of a sunset on the Mediterranean: it is a piece to copy even in the city, under a linen-straw blazer or as a bodysuit with high-waisted denim. For Prada the stripe becomes a graphic element, in a play of red, black and white contrasts. The triangular logo in the center elevates the swimsuit to a contemporary status symbol.

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Prada and Missoni One-Piece Swimsuits (Courtesy of Press Office)

2025 One-Piece Swimsuit: It’s Cut-Out Mania

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Dior’s 2025 Striped One-Piece Swimsuit (Getty Images)

If Miu Miu transforms the one-piece swimsuit into a fashion body with a front cut-out , perfect under shiny skirts and bejeweled belts, Oséree lights up the scene with a glittery green and turquoise model, all knots and geometrics, ideal for sunset parties. Celine instead focuses on a discreet but seductive elegance: minimal black swimsuit with golden Triomphe detail and sculptural band construction.

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Prada and Missoni One-Piece Swimsuits (Courtesy of Press Office)