I spend a lot of my time looking for pieces that exude luxury, just without the accompanying designer price tag. And whilst plenty of brands have mastered the art of making affordable pieces look far more expensive than they are, there's one that, in my eyes, does it better than almost anyone else. Of course, I'm talking about COS.

Known for its clean lines, refined silhouettes and beautiful fabrics, COS has become my go-to destination for achieving that minimalist, The Row-adjacent aesthetic on the high street. And one scroll through the new-in section tells me autumn 2026 is going to be a particularly good season for the brand. It's already filled with the kind of pieces I predict will go viral—and subsequently become near-impossible to get hold of.

Francesca Saffari wearing the viral COS cashmere jumper. (Image credit: @francescasaffari)

Some familiar favourites have returned. The Cashmere Crew-Neck Jumper, with its sculptural shape and chunky ribbed trims, has long been a fashion-person favourite, whilst the cult Chord straight-leg jeans are back in the deep indigo washes that feel particularly right for autumn. But alongside the COS classics, there are some seriously good newcomers. The Merino-Wool V-neck jumper, complete with clever layered detailing, is already proving popular amongst stylish women, and comes in everything from chic brown and red to a punchier purple colourway.

The outerwear offering is particularly strong, too. Funnel-neck jackets are making a major comeback for another autumn, and COS's ecru funnel-neck trench has already sold out, whilst its lightweight nylon iteration has returned in a line-up of suitably chic colours. Then there are the accessories. Sleek leather bowling bags, minimalist shoulder styles and the brand's now-signature crossbody bags are all back for the new season, ready to make even the simplest jeans-and-knit combination feel infinitely more polished.

COS' viral v-neck jumper (Image credit: COS)

If you're planning your autumn wardrobe now, these are the COS pieces I'd move quickly on. Keep scrolling to shop the new-season buys I predict will be everywhere before October.

Shop The 5 Viral Autumn COS Buys

1. Comfy Cashmere

COS Rounded Cashmere Crew-Neck Jumper

The rich brown mélange only adds to its expensive-looking appeal.

COS Sculpted Cashmere Funnel-Neck Cardigan

Part cardigan, part jacket, this sculptural cashmere style is exactly the kind of clever knitwear COS does so well.

COS Brushed-Cashmere Triangle Scarf

The chicest way to add a little cashmere to your autumn wardrobe.

COS Cashmere Crew-Neck Jumper

A grey cashmere crew-neck is about as timeless as autumn knitwear gets.

COS Cashmere Funnel-Neck Jumper

On those extra cold days, opt for the funnel-neck version of the cashmere knit.

2. 90s Jeans

COS Chord Straight-Leg Jeans

The Reprise is already a fashion-person favourite, and this dark-indigo wash might be its chicest iteration yet.

COS Facade Straight-Leg Jeans

The taupe wash gives these jeans a seriously elevated feel.

COS Chord Straight-Leg Jeans

For those who aren't ready to surrender lighter denim just yet, this is the pair.

COS Corduroy Straight-Leg Jeans

Corduroy is having a quiet renaissance, and this rich brown pair makes a convincing case for swapping denim for something more tactile.

COS Facade Straight-Leg Jeans

Brown denim is one of the easiest ways to make your jeans feel fresh for autumn.

3. V-Neck Jumpers

COS Merino Wool Layered V-Neck Jumper

This is already shaping up to be one of COS's hero knits for autumn.

COS Argyle Wool-Alpaca V-Neck Jumper

Just add relaxed jeans and loafers.

COS Sculpted Cashmere V-Neck Jumper

Proof that even the simplest knit can feel special when the proportions are right.

COS Merino Wool V-Neck Jumper

A flash of blue is an easy way to break up autumn's sea of brown, grey and burgundy.

COS Merino Wool V-Neck Cardigan

Red isn't going anywhere for autumn, and this fine merino cardigan is an incredibly easy way to wear it.

4. Funnel-Neck Jackets

COS Funnel-Neck Cotton Trench Coat

COS knows its way around a funnel-neck jacket, and this trench might be one of its sleekest yet.

COS Nylon Funnel-Neck Jacket

If last year's sell-outs taught us anything, it's not to wait around when COS launches a great funnel-neck jacket.

COS Leather Funnel-Neck Jacket

This could easily pass for a designer buy.

COS Belted Wool-Blend Funnel-Neck Coat

Minimal, sculptural and exactly the sort of coat that makes an entire outfit look expensive.

COS Funnel-Neck Wool-Herringbone Short Coat

If you're already tiring of black outerwear, consider this.

5. Quiet Luxury Bags

COS Montmartre Bowling Bag - Leather

COS's cult Montmartre is back, and the dark-brown leather couldn't feel more autumn 2026.

COS Pavilion Shoulder Bag - Leather

This is quiet luxury in bag form

COS Paradigm Micro Tote Bag - Leather

Small but seriously polished, the Paradigm has the sculptural proportions that make COS accessories look so expensive.

COS Swing Crossbody Bag - Leather

The bag that helped cement COS's cult-accessory status needs little introduction.

COS Easel Tote Bag - Split Suede

Bordeaux suede and a roomy tote silhouette? This has autumn It-bag written all over it.