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.
Francesca wears the oversized shirt by COS.
Here at Who What Wear, 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 that studio bowling bag, and those wide-leg trousers—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 2025 so far...
THE 15 BEST-SELLING COS BUYS OF 2025 SO FAR:
1. Column Straight-Leg Jeans
These have already been seen on so many of the most stylish people out there.
2. The Clean Cut T-Shirt
This comes in so many colours and prints but thank you, COS, for the perfect white tee..
3. Studio Bowling Bag
The WWW team loved the original leather bowling bag, but we're even more in love with the suede iteration. Catch it while it's on sale now.
4. Single-Breasted Linen Blazer
When you're on the hunt for chic tailoring during the summer months, linen blazers are always the answer.
5. Boxy Linen Shirt
The other colourways have already sold out, so act fast.
6. Open-Back Maxi Dress
I have no doubt you'll want to wear this comfortable yet smart dress on repeat.
7. Leather Fisherman Sandals
Simple, versatile and timeless. What more could you want?
8. Knitted Linen Cardigan
COS is well known, and loved, for it's knitwear and so chances are you've already seen this cardigan all over your Instagram feed this season. We love the cream, but it also comes in a chocolate brown and peachy-pink.
9. Arch Jeans
Honestly, we all love these jeans. Don't believe me? Read our thoughts here...
10. Ribbed Tank Top
A tank is an essential layering item.
11. Wide-Leg Tailored Twill Trousers
Is there anything more timeless than a tailored trouser? COS' bestselling style is back in stock and available in five colourways.
12. Circle-Cut Midi Skirt
The perfect midi skirt no matter the season or occasion.
13. Slouchy Raffia Tote Bag
This has shot right to the top of my wish list.
14. Cotton-Blend Capri Trousers
These are already proving to be a sell-out!
15. Minimal Leather Trainers
I am in love!
Shop More COS Buys We Love:
This is such a chic summer dress.
The cutest suede flats!
So elegant.
Very chic.
No capsule wardrobe is complete without a denim shirt in my opinion!
I want the matching top as well.
Love.
The bubble hem is everything.
This also comes in black, white and khaki.
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