What Is Sizing Like at Jacob Cohën? Your Complete Fit Guide to Italy's Most Luxurious Denim

By Ella Blake – Fashion Stylist | Tellar Fashion Hub – Always honest, unbiased & unsponsored

Jacob Cohën runs small to true to size — and if you're not across the brand's Italian sizing conventions, it's very easy to get caught out. I've seen it happen time and again: women investing in a £400+ pair of jeans online, going by their usual number, and ending up with something that won't do up. My advice? Always measure before you buy, treat the size label as a starting point, and read this before you click checkout.

Jacob Cohën is an Italian luxury denim house founded in 1985 in the Veneto region — the part of Italy that's been doing artisanal tailoring and craft production for centuries. Every single pair of jeans is handmade, which means there's a small amount of natural variation between cuts, and the brand takes sizing seriously. These are not your average high street jeans.

How Does Jacob Cohën Size Their Women's Jeans?

Women's jeans at Jacob Cohën are sized in denim waist measurements (24, 25, 26, 27, 28, 29, 30, 31, 32+), rather than UK sizes or EU numbers — though you'll occasionally see EU sizing on some styles. Here's a rough guide to help you cross-reference:

Size 26 ≈ UK 8 / EU 36
Size 27 ≈ UK 8–10 / EU 36–38
Size 28 ≈ UK 10 / EU 38
Size 29 ≈ UK 10–12 / EU 38–40
Size 30 ≈ UK 12 / EU 40
Size 31 ≈ UK 12–14 / EU 40–42
Size 32 ≈ UK 14 / EU 42

These are guidelines, not guarantees — and the fit of the specific style you're buying matters just as much as the number. More on that below.

One crucial thing to know: all Jacob Cohën trousers are made in a single length. There's no short, regular, or long option. Instead, every pair comes with a spool of the exact matching thread so a tailor can shorten them for you. It's a lovely detail that speaks to the brand's tailoring roots, but do factor in the cost of any alterations when you're budgeting.

Should You Size Up?

This really depends on the fabric and the cut. My general rule of thumb:

Raw denim and 100% cotton selvedge styles — go true to size. These jeans have zero stretch and will feel quite rigid initially, but they're designed to mould to your body over several months of wear. It can feel alarming at first — I tried on a pair in a boutique in London and genuinely thought I'd somehow changed shape overnight — but trust the process. They soften beautifully.
Stretch denim styles — these tend to run slightly small, so size up one if you're between sizes or if you have a fuller hip and thigh area.
Between sizes? Always go up. The tailored cut is precise, and a size too small will look visibly uncomfortable — which defeats the entire purpose of investing in luxury denim.

The fact that each pair is handmade means there can be slight variation, so if you're buying online rather than in person, it's worth knowing your exact waist and hip measurements before committing.

The Key Women's Fits — and What They Mean for Sizing

Jacob Cohën offer a genuinely brilliant range of women's silhouettes, and the fit of each style affects how the sizing translates onto your body. Here's the breakdown:

Kimberly — the brand's signature skinny. Close-fitting from hip to ankle. If you carry volume in your hips or thighs, this is the style where I'd suggest going up one size without question.
Hailey — wide-leg and contemporary. A more relaxed fit through the seat and thigh, so you have a bit more room to play with. True to size tends to work well here.
Victoria — flared silhouette, timeless and extremely flattering. Mid-rise, fitted through the thigh before flaring below the knee. True to size is usually the right call.
Straight-leg and boyfriend styles — these allow more room through the hip and thigh, which makes them more forgiving. True to size works for most body shapes.
Cropped and barrel-leg styles — more relaxed through the body but cropped in length, so keep that in mind if you're petite.

The quality of materials is exceptional — think Italian selvedge denim, hand-finished details, silver-plated buttons, and hand-written care labels. These are genuinely heirloom pieces if you look after them. The denim is designed to get better with every wear, moulding to your body and softening over time. Once you've worn a pair of Jacob Cohën jeans that have truly broken in, it's very difficult to go back to anything else.

What About Petite or Tall Sizing?

Jacob Cohën doesn't offer a petite or tall range — the single-length construction means everyone gets the same inseam and relies on tailoring. If you're petite, budget for a hem. If you're tall, the cropped and barrel-leg styles will sit differently on you than on someone shorter — worth keeping in mind when you're selecting a silhouette.

How to Get Your Exact Jacob Cohën Size — Without the Guesswork

This is where Tellar.co.uk makes life genuinely easier. As the UK's leading free sizing tool, Tellar matches your exact measurements to over 1,500 brands — including Jacob Cohën — so you know your size before you spend a penny. You measure once (bust, waist, and hip), and then use the Store Size Lookup tool to get your precise size in any brand, instantly. No downloads, no subscriptions — completely free.

It's particularly useful for a brand like Jacob Cohën, where sizing is precise and returns or exchanges on luxury denim are never fun. Check your Ultimate Clothing Sizing Guide on Tellar too — it covers everything from measuring yourself correctly to understanding how different fabrics affect fit.

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Love the Look of Jacob Cohën? Here Are My Alternative Picks

Jacob Cohën is a serious investment — roughly £330 to £750+ per pair. If you love the aesthetic but want to explore other options first, here's where I'd look:

High Street & Accessible Brands

Levi's — the gold standard for accessible denim. Their premium selvedge and Made in Japan lines are genuinely brilliant quality and the sizing is consistent once you know your fit.
Calvin Klein — clean, minimal denim with a New York edge. The high-rise skinny and straight-leg styles are particularly strong, and sizing tends to run true to size.
Abercrombie & Fitch — their denim has had a genuine glow-up in recent years. Curve Love jeans are specifically designed for a fuller hip-to-waist ratio and the quality at this price point is impressive.
Mango — consistently one of the best high street denim options. The straight-leg and barrel jeans have been everywhere this season, and the quality punches well above the price.
COS — minimalist, well-constructed, and the kind of brand that aged denim-heads love for its clean lines. Good for anyone who appreciates the understated aesthetic of Jacob Cohën without the price tag.
Massimo Dutti — premium feel at high street prices. Their tailored straight-leg and wide-leg denim are quietly brilliant, and the Italian aesthetic feels genuinely similar to Jacob Cohën's more relaxed styles.
Reiss — for when you want denim that looks expensive but doesn't cost a mortgage. Their slim and straight-leg options are polished enough for work, and sizing tends to be consistent and true.

Premium Denim Alternatives

Citizens of Humanity — probably the closest in spirit to Jacob Cohën at a lower price point. Exceptional denim quality, thoughtful construction, and beautiful washes. Their Amber and Annina styles are particular favourites of mine.
Paige — Los Angeles heritage denim with genuinely flattering cuts. The Hoxton and Transcend ranges are brilliant for women who want stretch with a premium feel. Sizing runs slightly small — size up if in doubt.

Independent Picks Worth Knowing

Boyish Jeans — a brilliant Los Angeles sustainable denim brand using deadstock fabrics and eco-conscious production. The styles are relaxed and beautifully cut, with a vintage-inspired aesthetic that sits somewhere between Jacob Cohën and classic Californian denim. Still relatively under the radar in the UK, which makes wearing them feel all the more special.
Monaco Palena — a small Italian denim label producing limited-run, artisan-made jeans with a strong sense of craft. The kind of brand that Jacob Cohën aficionados tend to discover and fall completely in love with. Worth bookmarking.

More From the Tellar Fashion Hub

If you're deep in a denim research spiral (I see you, and I respect it), here are a few more reads that might help:

Written by Ella Blake, Fashion Stylist at Tellar.co.uk — The UK's leading free sizing tool and independent fashion library. No ads, no sponsors, no bias.