It's Official: These Are the 15 Most Popular COS Buys of 2023 So Far

COS Best Sellers: 15 of the Brand's Most Popular Buys: COS Atelier ss23 show Paris


Moeez for COS Atelier

Showgoers at the COS Atelier show wearing the brand's signature minimalist pieces. 

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 Vogue editors and A-list celebrities, to my mum turns if they want to find quality classics that are design-led and anything but boring. 

The brand's COS Atelier shows during fashion month (think a premium edit of its most elegant pieces) are proof enough of how elevated the high-street designs feel and how effortlessly they can translate onto a high-fashion crowd. Celebs and editors, models and influencers alike attend the shows sporting the same blazer you can pick up on Oxford Street on your lunch break. Genius. 

COS Best Sellers: 15 of the Brand's Most Popular Buys


Moeez for COS Atelier

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 2023 so far. From hero basics that you've probably been searching for, like perfect vests, T-shirts and shirts, to cult items like that crossbody 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 2023 so far... 

1. Leather Swing Crossbody Bag

This has been seen on so many of the most stylish people. It's become a modern cult classic. 

I've lost count of how many times this bag (in all colours) has sold out. 

2. Wide-Leg Tailored Wool Trousers

Wide-leg trousers have become an essential capsule wardrobe piece if you're after for a polished look. These are widely known amongst industry insiders to be the very best.

I'd call these trousers famous, as they're that popular. Luckily COS has brought them back for 2023, and they're in stock now. 

I have them in black and beige, but I wear them so much, I think I might have to get the grey. 

3. Asymmetric Gathered Midi Dress

Wedding or work, this dress will take you there. 

4. Wide Leg Tailored Trousers

These are the cotton version of COS's perfect wide-leg trousers—great if you have wool sensitivity and ideal for summer. 

5. The Clean Cut T-Shirt

This comes in 19 different colours (thank you, COS). 

The black is just as classic as white, especially for winter. 

6. Ribbed Tube Dress

7. Oversized Rounded Wool Coat

A wool coat is a key capsule wardrobe staple, so it's unsurprising that COS does so many great options. 

This specific style sold out so quickly last year, but luckily it's back for 2023. 

8. Leather Loafers

I've tried these on and honestly they are buttery soft. 

I adore the crisp cream pair to brighten up autumn looks. 

9. Oversized Double-Breasted Wool Coat

A classic outerwear piece you could never regret investing in. 

This mole brown colour makes it feel so designer. 

10. Flared Ribbed-Panel Knitted Set

Tuck this chic knit into trousers, or pair with the matching skirt below. 

Such a chis, fail-safe autumn/winter outfit. 

11. Ribbed Tank Top

Everyone needs a perfect white tank top in their collection. 

Choose from twelve different colours (from neutrals to brights), or take one of each—you won't regret it. 

12. Boxy-Fit Double-Faced Wool Jacket

If you're after a lighter but still warm jacket for the new season, this super-soft style is perfect. 

I can't get enough of it in this expensive-looking chocolate brown shade. 

13. Crew-Neck Merino Wool Top

So simple but so elegant—another of COS's basics which comes in multiple colours. 

No doubt, you'll wear it on repeat. 

14. Classic Leather Belt

Don't underestimate how useful a great leather belt is, especially this one. I have it and it really elevates any simple outfit. 

15. Pure Cashmere Jumper

The items I've had in my wardrobe longest are my lighter pure cashmere knits. You can be certain this will never date. 

Dress this up or down, layer it up under coats in the cold or or throw it over your shoulders during transitional seasons.