What Is Sizing Like at Jaeger? A Stylist's Honest Guide

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

Jaeger runs broadly true to size — but with an important caveat: it depends entirely on what you're buying. The brand's tailored pieces and structured dresses tend to be very accurate to a standard UK size, while knitwear and relaxed separates can come up a touch generous. Get that distinction right, and you'll be completely sorted. Get it wrong, and you'll end up returning a beautiful cashmere cardigan that swamps you. I've done exactly that, so trust me on this one.

A Bit of Background on Jaeger

Jaeger has had quite the journey. Founded in 1884 — yes, 1884 — it built its reputation on premium natural fabrics and quietly impeccable tailoring. After going into administration in 2021, the brand was picked up and relaunched as an exclusive label at Marks & Spencer, which is where you'll find it today. The M&S relaunch has actually been rather good, keeping the understated British elegance Jaeger has always been known for, while making it more accessible price-wise. Think heritage British tailoring with a clean, modern sensibility.

So Does Jaeger Run True to Size?

For the most part, yes — especially across tailored and structured pieces like blazers, coats, and shift dresses. These are cut to follow the body's natural lines with precision, so if you're a UK 12 in M&S own-label, you'll likely be a UK 12 in Jaeger too. That said, there are a few nuances worth knowing before you hit "add to basket":

Structured tailoring (blazers, suits, smart trousers): True to size. The cut is clean and modern — not boxy, not skimpy. Tends to suit a straighter silhouette particularly well, though curvier figures may find the waist of tailored trousers gaps slightly at the back.
Coats and outerwear: True to size, with a little room built in for layering underneath — which is exactly right, in my view. I wouldn't go down a size in a coat just to get a closer fit; it defeats the point.
Knitwear (jumpers, cardigans): This is where it gets generous. Jaeger's knits often run slightly large, so if you prefer a neater, more fitted look, consider sizing down. If you want comfort layering, stay true to size.
Dresses: Consistent and reliable. The silhouettes are elegant and tend to flatter most body shapes — particularly shift and wrap styles, which work brilliantly on an hourglass or pear shape.
Blouses and shirts: True to size. The detailing is refined — pleated fronts, collarless cuts — and the fit is precise without being restrictive.

What Body Shapes Does Jaeger Suit Best?

In my experience, Jaeger is a brilliant brand for women who suit clean, unfussy lines. It doesn't rely on stretch fabric or ruching to create shape — it uses cut and cloth instead, which is why the quality feels so elevated. That said, it really does work across a range of figures:

Rectangle / straight figures: Jaeger's structured tailoring is made for you. The sharp blazers and pencil skirts add definition beautifully.
Hourglass figures: The dresses and wrap styles are very flattering — the brand's clean lines showcase your proportions without fuss.
Pear shapes: Flowing blouses and A-line skirts work well. I'd stick to a size that fits your hips and simply have the waist taken in if needed — the quality of Jaeger fabric makes it worth the alteration.
Plus sizes: The M&S Jaeger range now offers extended sizing, which is a welcome development. As ever, I'd recommend checking your specific measurements against the M&S size guide for each piece.

My Personal Experience with Jaeger Sizing

I'll be honest — I had a near-miss with a Jaeger wool coat a couple of seasons ago. I ordered my usual size expecting the slightly snug fit I prefer, and it arrived with rather more room across the shoulders than I'd planned. For a coat, actually, that turned out to be perfect — brilliant over a thick roll-neck in January. But the lesson stuck: don't assume the same size works across every category. A Jaeger knit and a Jaeger blazer are different beasts entirely.

Jaeger Sizing vs. Similar Brands

If you already shop at Hobbs, you'll find Jaeger runs slightly more generously in tailoring — Hobbs tends to be just a touch more nipped at the waist. Jigsaw is broadly comparable to Jaeger in fit. Reiss cuts slightly slimmer and more contemporary. And compared to M&S own-label, Jaeger is remarkably consistent — definitely more premium in the finish and fit.

Where to Shop for Similar Styles

If you love the Jaeger aesthetic — that clean, tailored, heritage British look — here are the brands I'd point you towards, across every budget:

High street picks:

Whistles — Brilliant for sharp tailoring and refined basics at accessible prices. One of the best high street options for a Jaeger-adjacent wardrobe.
Jigsaw — Understated, quality-driven, and cuts a similar cloth to Jaeger. Sizing is very comparable.
Me&Em — A go-to for polished British dressing. Elevated basics, beautifully made. Sizing is consistent and generous in a good way.
Phase Eight — Particularly strong for occasion wear and smart dresses. Great range of sizes and very flattering across different shapes.
Massimo Dutti — European quality at mid-range prices. Brilliant tailoring and a very similar sizing philosophy to Jaeger.
LK Bennett — Perfect for occasion dressing and smart workwear. Sizing runs true with a classic British fit.
Boden — A little more relaxed than Jaeger, but excellent quality and reliable sizing. Worth a look for knitwear especially.
Reiss — Slightly more contemporary and fitted than Jaeger, but a similar level of craftsmanship. Great for blazers and tailored trousers.

Two independent picks you should know about:

Brora — A Scottish heritage brand producing some of the most beautiful cashmere and merino knitwear in Britain. If you're a Jaeger fan, Brora will feel like a natural next step. Sizing is true and quality is exceptional.
The Fold London — A London-based brand built specifically for professional women. Immaculately tailored, sophisticated, and with fit at its core. A favourite for those who find Jaeger a little too relaxed for the boardroom.

Never Guess Your Size in Jaeger Again

If you've ever ordered a Jaeger coat in your usual size and had it arrive a size too big — or squeezed into a knitwear cardigan that wasn't quite right — I have exactly the solution for you.

Tellar.co.uk is the UK's leading free sizing tool. It matches your exact body measurements to over 1,500 brands — including Jaeger — so you always order the right size, first time.

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And while you're there, explore the Tellar Fashion Hub — a library of thousands of honest, independent fashion posts written by our in-house stylists. No ads, no sponsored content, no bias. Just genuinely useful fashion advice.

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