One brand that's been on every fashion person's lips this year is COS—and rightfully so. In 2025, the London-based brand experienced significant growth and success. It returned to New York Fashion Week for a fourth straight season with a see-now, buy-now collection, tested pop-ups in Europe and Korea, and consistently launched collections that are modern, timeless, and wearable. It has now become the third hottest brand, behind Saint Laurent and Miu Miu, according to The Lyst Index Q3 2025 Report. To top it all off, its Chunky Cashmere Sweater was one of this quarter’s hottest items.
Of course, a cashmere crewneck sweater isn't new, but COS's version feels fresh and modern. Unlike other styles, it features a chunky ribbed collar design with matching ribbing on the cuffs and hem. The drop shoulders and oversize fit—two small details that many brands struggle to perfect—give it an effortlessly chic look. It’s available in a variety of neutral colors such as navy, black, gray, and beige, as well as muted shades like pale pink and pastel yellow.
Since this sweater was released at the end of 2024, fashion insiders are aware of it and have already had the chance to get theirs, including our shopping director, Bobby Schuessler. As a result, many colors are now sold out; however, two options remain available. With that said, if you want to snag the hottest sweater of 2025 before it sells out completely by next week, keep scrolling because we've linked them below. While you're at it, check out the other crewneck sweaters that will have you looking put-together and feeling cozy all winter long.
Shop COS's Chunky Cashmere Crewneck Sweater
Style with dark-wash straight-leg jeans or brown wide-leg trousers.
If daylight savings has got you down, throw on this cheerful sweater.
Shop More Chic Crewneck Sweaters
Who What Wear editors love this sweater because of the oversize but flattering fit and various color options.
Nordstrom's in-house brand has everything you need for a chic and cozy winter.
If I owned this sweater, I'd pair it with similar pajama-inspired pants.
I love the chunky ribbed collar.
This sweater also comes in a beautiful light brown color.
Argyle is having a moment right now.
There's a reason this is called the Cozy Crewneck Sweater.
Another great knit from COS.
The price point and rich burgundy hue are *chef's kiss.*
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Every Fashion Editor on Our Team Loves COS—19 Fall Items We Predict Will Sell Out by ThanksgivingElevated, minimalist, and timeless.
