No One Does Elegant High Street Dresses Like COS—6 Trending Summer Styles I've Bookmarked

Whilst dresses are a year-round hero, they really come into their own once summer rolls around. Thrown on with simple sandals and a basket bag for city strolls, or elevated for evening with mules and a clutch, the humble dress works extra hard in the summer months. Currently, I'm on the hunt to expand my dress collection, and with an elevated look, timeless aesthetic and high-street price tag on my mind, naturally, I turned to COS. After scouring the brand's stellar dress collection, it quickly became clear that COS has perfectly captured the six key dress trends defining summer 2025.
Whether headed on an island escape or simply navigating the city in the summer, COS has upped its game with its latest dress collection. As a brand, COS is known for high-end looking designs and an innate, understated appeal that sets its pieces apart from the rest.
With temperatures rising, those looking for breezy linen styles will be pleased to explore COS's selection of minis and maxis. The brand always brings a considered finish to its pieces, this summer in particular, with gathered details making the simplest styles feel contemporary. Considering how COS excels in the classics from the best white T-shirt to tailored trousers, it's only natural that it would also turn its hand to the beloved shirt dress—an easy style that has featured in the best wardrobes for years, and will continue to do so.
What consistently draws me back to COS's dresses is that they're eye-catching yet simple. The standout features come in the form of rich shades, considered details like gathered fabrics or an elegant back, and feature a timelessness that ensures you'll be reaching for them year after year. For minimalists, these dresses can pair seamlessly with understated sandals and classic basket bags, and those looking for a bolder look can add accessories to up the ante.
Keep scrolling to explore the six dress trends that are dominating the COS new-in section for summer 2025.
Shop 6 Dress Trends COS Is Backing For Summer 20251. The Gathered Dresswhowhatwear