COS Elevates Summer 2026 with Modern Essentials

Modern tailoring meets effortless summer dressing in a collection shaped by texture and proportion.

The Fashionisto

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Published July 13, 2026

Pierrick Grégoire in an open red and blue check shirt and tan wide-leg trousers with sandals and sunglasses
Pierrick Grégoire leaves his check shirt open over tan wide-leg trousers for a breezy dockside look from COS. Photo: COS

COS approaches summer 2026 with the confidence of a brand that knows where it fits. Relaxed tailoring, lightweight knits, and separates define a season suited to both city streets and vacation escapes.

COS High Summer 2026

Pierrick Grégoire in a white ribbed-paneled camp shirt and tan trousers against a wood-paneled wall
Pierrick Grégoire wears a ribbed-paneled camp shirt with tan trousers. Photo: COS

The collection favors texture, introducing ribbed polos, airy camp shirts, linen, and soft woven fabrics in a palette of ivory, stone, charcoal, navy, and deep green. Wide-leg trousers remain central to the silhouette, paired with refined basics that keep the focus on proportion and fabric.

Pierrick Grégoire in a ribbed tank top and dark wide-leg trousers with strappy sandals, standing in a glass doorway
Framed by a glass doorway, Pierrick Grégoire sports a ribbed tank with wide-leg trousers and leather sandals. Photo: COS

Leather sandals appear in many of the looks, while open-collar shirts, relaxed shorts, and relaxed tailored jackets add versatility. Pierrick Grégoire appears throughout the edit in silhouettes that highlight the collection’s easy proportions, from wide-leg trousers and textured knit polos to lightweight suiting with pinstripes.

Pierrick Grégoire in a half open forest green linen shirt and white shorts with sunglasses against a textured white wall
Pierrick Grégoire grounds COS’ forest-green linen shirt with white shorts. Photo: COS

A forest green linen shirt provides one of the season’s strongest color moments, while a white pinstriped suit offers a fresh take on summer tailoring. Together, the pieces reinforce COS’ penchant for modern essentials that feel elevated through thoughtful construction and timeless design.

The same wide-leg trousers and textured knit polos turn up on a rooftop in COS’ Kaplan Hani-led city edit, where the tailoring holds its line through full summer sun.

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