How to Find Your Perfect Fit at AllSaints

By Ella Blake | Tellar Fashion Hub : Honest, Unsponsored, Unbiased.

AllSaints uses standard UK sizing, but their leather jackets and more fitted styles run small — sizing up in those pieces is almost always the right move.

AllSaints has a very specific energy. It’s not trying to be everyone’s brand, and that’s exactly why it works. If you’re after that particular combination of rock-adjacent cool, impeccable leather, and relaxed London edge, there really isn’t another brand doing it quite as well at the price point. I’ve been shopping there for years — and recommending it to clients for just as long — but it’s taken me a fair few returns to really get to grips with how their sizing actually works. Let me save you the bother.

The Basics: How AllSaints Sizes Their Clothes

AllSaints uses UK sizing — so sizes 6 through to 18 across womenswear — which immediately feels more straightforward than brands using their own proprietary systems. And for the most part, their jersey and relaxed pieces do run pretty true to size. The complications kick in with their leather and structured pieces, which is exactly the category most people come to AllSaints for in the first place.

Here’s the general lay of the land:

• Leather jackets — these run small, sometimes by a full size. The shoulder seam placement is narrow and the body is cut close. If you’re usually a 12, try a 14

• Knitwear and jersey dresses — largely true to size; the fabrics have enough stretch to be forgiving

• Denim — runs true to size in the waist but can be slim through the thigh on curvier figures; size up if you’re between sizes

• Coats and blazers — structured outerwear runs close to true to size, but if you plan to layer, go up one

• Slip dresses and fitted styles — these are cut deliberately body-skimming, so size up if you prefer a less fitted look or have a fuller bust

The Leather Jacket Problem (and How to Solve It)

I want to spend a moment on the leather jacket situation because it’s the number one AllSaints sizing mistake I see, and I’ve made it myself. A few years ago I ordered the Balfern biker in my usual size. It arrived, looked incredible on the hanger, and then I put it on and couldn’t move my arms properly. The shoulders were too narrow, the body was pulling across my back, and the whole thing just felt like I’d borrowed it from a smaller friend.

I went up a size. It was perfect. The silhouette was still sharp and structured — the leather holds its shape regardless — and I could actually wear it without looking like I was auditioning for a straightjacket fitting. The moral: with AllSaints leather, always size up at least once, and if you have broader shoulders or a larger bust, possibly twice.

Things to check before you order a leather jacket from AllSaints:

• Measure your chest at its fullest point and compare to their size guide — you want at least 2 inches of ease for comfort

• Consider your shoulder width; if you know you have broad shoulders from other brands, go up

• Think about what you’ll wear underneath — even a fine-knit jumper changes the fit significantly in a leather jacket

• Read the individual product reviews on site; regular AllSaints customers are very forthcoming about sizing on specific styles

How AllSaints Compares to Brands You Already Know

One of the most useful things I can do as a stylist is give you a real cross-reference — because most of us shop across multiple brands and already have a reliable sense of our size in one or two of them.

• Mango — runs similarly to AllSaints on jersey and dresses; your Mango size is usually a safe starting point, though Mango’s leather runs slightly larger

• French Connection — comparable sizing on fitted dresses and tops; if you wear a FCUK 12, you’re likely a true AllSaints 12 in jersey, but a 14 in leather

• Whistles — Whistles tends to cut slightly more generously through the body; if you’re a Whistles 10, stick with a 10 in AllSaints jersey but size up for structured pieces

• River Island — RI runs quite true to UK size; your River Island size translates well to AllSaints on most jersey styles

• Urban Outfitters — UO sizing varies wildly by brand-within-brand, so less reliable as a reference; measure and use the AllSaints guide directly

• Reiss — Reiss is generally true to UK sizing; if you know your Reiss size, it’s a solid benchmark for AllSaints fitted dresses and trousers

• Ted Baker — Ted uses its own numerical sizing (0–5), which makes direct comparison tricky, but Ted runs small; a Ted 2 is roughly an AllSaints 10–12

AllSaints Denim: What to Know

The AllSaints denim edit has got significantly stronger in recent years — their wide-leg and straight-leg styles in particular have become a genuine wardrobe staple for a lot of my clients. Sizing-wise, the waistbands are fairly unforgiving (no stretch, no elastication), so I always recommend measuring your natural waist and hips before ordering.

Their jeans come up close to true-to-size in the waist, but run quite slim through the thigh and hip — particularly on their straight and slim-cut styles. If you carry more volume through your hips or thighs, sizing up gives a much better fit and you can always belt if needed. For the wide-leg styles, sizing is more relaxed and forgiving — true to size works for most.

Two Independent Brands to Know if You Love AllSaints

If AllSaints is your aesthetic home, there are a couple of smaller labels worth having on your radar. Deadwood is a Swedish sustainable leather brand making genuinely exceptional jackets and trousers from upcycled hides. The quality is extraordinary, the environmental credentials are real, and the sizing is generous — true to European standard, no AllSaints-style shoulder surprises. The other one I’d point you towards is Stand Studio — a Scandinavian brand that does faux and real leather outerwear with that same cool-but-considered sensibility. Their pieces tend to have a slightly more oversized, relaxed cut than AllSaints, which actually makes sizing easier, and the craftsmanship is exceptional for the price.

Quick AllSaints Fit Checklist

• For leather — size up at least one, possibly two if you have broad shoulders

• For jersey dresses and knitwear — true to size is usually safe

• For denim — measure your hip; size up if you’re between sizes

• For coats — true to size if worn over fine layers; up one if you’re a heavy-knitwear layerer

• Always check the product reviews on-site; AllSaints shoppers are detailed and honest about fit

• If in doubt between two sizes in leather, go larger — you can always style an oversized leather jacket, you cannot style one that won’t do up

Take the Guesswork Out of Sizing — Use Tellar

If you shop across multiple brands (and most of us do), keeping track of your size in each one is genuinely exhausting. That’s exactly why Tellar.co.uk exists. It’s the UK’s leading free sizing tool — enter your measurements once, and it instantly matches you to your correct size across 1,500+ brands. AllSaints, Reiss, Mango, Whistles and hundreds more, all in one place. No returns, no guessing, no stress.

Here’s all you need to do:

• Measure once — bust, waist, and hips, or use a brand size you already know fits you well

• Use the Store Size Lookup tool — your exact recommended size at AllSaints and every other brand in seconds

• Always free — no app, no subscription, no fuss. Works straight in your browser

And if you want more style advice while you’re there, the Tellar Fashion Hub is packed with free, honest posts from experienced stylists — no sponsored content, no ads, just real information. Worth bookmarking:

• The Ultimate Clothing Sizing Guide — the definitive resource on how sizing actually works across brands

• Jeans Trends 2026 — the cuts and washes worth buying right now

• The Ultimate Guide to Dresses — styles, body shapes, and the best places to shop

• The Ultimate Guide to Jackets — including everything you need to know about leather jacket fit

Your measurements stay the same. Brand sizing doesn’t. Let Tellar keep up with it so you don’t have to.