What Is Sizing Like at Couture Houses?

At a genuine couture house there is no "size" in the way you know it from the high street — every piece is built to your exact measurements over several fittings, so your own body becomes the size chart. That's the honest, slightly surprising answer, and it's the thing most people get wrong when they picture slipping into a Chanel or Dior gown the way they'd grab a 12 off the rail in Zara. Haute couture is made-to-measure by definition. The term is legally protected in France, and to use it a house must hand-make garments to order for private clients. So "what size am I in couture?" is a bit of a trick question: you are a set of measurements, not a number.

I've been lucky enough to sit in on a couture fitting once, and it completely reframed how I think about fit. Let me walk you through what actually happens, why people still insist couture "runs small," and how to get that built-for-you feeling without the five-figure price tag.

The honest answer: it's made to your body

True haute couture starts with a toile — a calico mock-up of the garment — pinned and re-pinned directly onto you or a mannequin padded to your shape. From there:

You'll usually have two to four fittings, sometimes more for a wedding or red-carpet piece.
The garment is adjusted to your posture, your shoulders and the way you actually stand — not to an average.
Nothing is graded up or down a "size." It is cut for you, full stop.

There's no size-label drama, because there's no size label in the conventional sense. The fit is the product.

So why do people say couture "runs small"?

Because most of us never touch true couture — what we actually buy is a house's ready-to-wear (prêt-à-porter) or its accessories. And designer ready-to-wear is where the reputation comes from. A few things worth knowing:

Designer RTW is cut on a smaller, sample-led block than the high street. A UK 12 body often needs the equivalent of a 14 or 16 here.
Most European houses size in French (34, 36, 38…) or Italian (38, 40, 42…) numbers, which throws anyone expecting UK sizing.
The cut is leaner — higher armholes, more defined waists, narrower shoulders.

The lesson: don't take it personally, and always size up a notch when you buy designer off the rail.

What this means for how you shop

If you want that couture feeling — clothes that look made for you — the trick isn't the budget, it's the fit and the finishing. Buy the shoulders and the bust to fit, then have everything else nipped in by a good seamstress. A £40 alteration on a well-cut jacket beats a badly-fitting designer one every single time. I learned that the embarrassing way after wedging myself into a borrowed designer blazer two sizes too tight for a shoot — I couldn't lift my arms, and you could see it in every frame.

Couture-level cut on the high street

These are the high street names I reach for when a client wants that elevated, made-to-measure look without the waiting list. Chosen for their tailoring and construction, not their logo:

COS — architectural, minimalist cutting that genuinely echoes the clean lines of a couture atelier; the closest the high street gets.
Reiss — sharp tailoring and occasionwear with a properly structured shoulder.
Jigsaw — grown-up, quietly luxurious fabrics and a considered, flattering cut.
Whistles — modern, refined silhouettes that hold their shape beautifully.
Massimo Dutti — Continental polish and lovely fabrications at a fraction of designer prices.
Hobbs — British occasionwear with a tailored, ladylike finish.
LK Bennett — polished, event-ready pieces with a couture-adjacent neatness.

Premium picks worth the stretch

Max Mara — the coats are an investment-grade, near-couture standard of construction.
Toteme — Scandinavian restraint and impeccable tailoring; quiet luxury done properly.
Joseph — beautifully cut trousers and knitwear with a true designer sensibility.

The real couture houses (luxury)

If you're shopping the source, these are the maisons defining couture today:

Chanel — the gold standard of the tweed jacket and made-to-measure.
Dior — sculptural, romantic, the spiritual home of the cinched waist.
Schiaparelli — surreal, sculptural showpieces leading couture's headline moments.

Just remember their ready-to-wear leans small and Continental, so size up.

Two independents I love

The Fold London — an independent British label with sharp, workwear-meets-couture tailoring and a genuinely flattering fit.
Róhe — quietly luxurious, beautifully constructed pieces with that elevated, made-for-you feel at a fraction of couture money.

Never guess a designer size again

Here's where Tellar comes in. Tellar.co.uk is the UK's leading sizing tool — match your body to over 1,500 brands instantly and never squint at a size guide again.

Measure once, using your bust, waist and hip, or just your existing size in a brand you already know.
Use the Store Size Lookup to get your precise size in any label — COS, Reiss, Everlane, Arket and more.
Always free, no downloads needed — it works straight in your browser.

And the Tellar Fashion Hub is a library stacked with free posts from our top stylists. Honest. Unbiased. Independent. Always free — style advice, top picks and the best brands for every fit.

Find Your Perfect Size at Tellar

Your body, matched to 1,500+ brands in seconds. Always free.

Visit Tellar Try the Store Size Lookup