It's Official: These Are the 15 Most Popular COS Buys of the 2026 So Far

COS staples are the very best on the high street, but these 15 items have proven to be the most popular buys of this year so far.

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COS Autumn/Winter 2025 Bestsellers.
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I think, by this point, we're all aware of how great it is to have COS as a part of our great British high street. Whether you're a super-fan whose wardrobe only consists of the brand's minimalist designs or simply someone who pops in when you're in need of a perfect white T-shirt. Since it landed on our shores back in 2007, COS has managed to become the arbiter of understated style, expensive-looking basics and a haven for capsule wardrobe staples—all at the more affordable end of the spectrum. And that's the key to its success—COS has been democratising the "quiet luxury" aesthetic for many years before that phrase was on everyone's lips. It's where everyone from editors and A-list celebrities, to my mum turns if they want to find quality classics that are design-led and anything but boring.

Woman on the street wearing a brown knitted jumper, green trousers and loafers.

Francesca wears the Chunky Cashmere Crew-Neck Jumper by COS.

(Image credit: @francescasaffari)

Here atBest Knockoff Luxury Clothing , we have access to a whole heap of data that means we can really see what people are shopping (not just on our Instagram feeds). This way we get a genuine idea of the hero buys that are truly worth the money, and unsurprisingly COS is one of the brands that consistently crops up in these best seller lists. And so, since we all want to know the buys that have been backed by the hard evidence of other people's trust, I thought it would be insightful to share with you the brand's most popular buys of 2025 so far. From hero basics that you've probably been searching for, like perfect vests, T-shirts and shirts, to cult items like those jeans and that funnel-neck jumper—they're all in this list. As you'd expect, though, everything shares the signature COS characteristics, making them versatile, timeless investments you're unlikely to regret.

Keep scrolling to see and shop the top 15 COS best sellers of 2026 so far...

THE 15 BEST-SELLING COS BUYS OF 2026 SO FAR:

1. Merino Wool High-Neck Top

2. The Funnel-Neck Jumper

3. The Arch Tapered Jeans

4. The Clean Cut Regular T-Shirt

5. The Relaxed Twill Wide-Leg Trousers

6. The Chunky Cashmere Crew-Neck Jumper

7. The Minimal Leather Trainers

8. The Clean Cut Long Sleeved T-Shirt

9. The Facade Jeans

10. The Slim Merino Wool Top

11. The Double-Faced Wool Long Coat

12. The Draped Checked Midi Skirt

13. The Marais Mini Bowling Bag

14. The Merino Wool Polo Jumper

15. The Checked Scarf-Detail Shirt

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Emily Dawes
Emily Dawes
Senior Shopping Editor

Emily Dawes is an editor, stylist and writer with over 12 years in the industry. Known for impeccable taste, our readers trust her advice, especially in her column, expensive-looking high street buys. Working forBest Knockoff Luxury Clothing UK since 2020, Emily has been a contributing editor, branded content editor and affiliate editor. Now, as senior shopping editor, she leads the e-commerce content strategy. After obtaining a BA in English and American Studies from Nottingham University, Emily landed at The Mail on Sunday’s YOU. As the magazine’s fashion editor, she travelled the globe to style and direct fashion editorials and celebrity cover shoots. As a freelancer, she has styled Grazia cover shoots, developed brand marketing and content plans and worked with VIP clients including Elizabeth Day.