How to Find Your Perfect Fit at Ami Paris

TELLAR FASHION HUB · BRAND SIZING GUIDES

By Ella Blake · Tellar Fashion Stylist

Ami Paris runs true to European sizing — which means if you usually size up in French or Italian brands, the same rule applies here. Know that going in, and you'll be fine.

Ami Paris is one of those brands that looks effortlessly simple until you're actually wearing it, and then you realise just how much thought has gone into the cut. Founded by Alexandre Mattiussi in Paris in 2011, Ami has become the definitive reference point for what Parisians actually wear — not the cliché striped top and beret version, but real, modern, quietly expensive-looking clothes that just work. Relaxed tailoring, brilliant knitwear, the sort of denim that makes your legs look longer. I've been obsessed for years.

But getting the sizing right at Ami is its own little puzzle — particularly if you're coming from UK high street brands. Here's everything you need to know.

How Does Ami Paris Sizing Work?

Ami Paris uses standard European (French) sizing for its womenswear, which typically runs smaller than UK sizing. As a general guide:

Ami Paris sizing is approximately one size smaller than UK high street sizing
Their womenswear is cut with a slim, Parisian silhouette in mind — not fitted in a body-con sense, but certainly not roomy
Menswear runs large — many women size down when buying from the men's collection, which is very much "a thing" at Ami
Knitwear can be quite slim through the shoulders, even when it looks oversized on the rail
Trousers tend to be long in the leg and slim through the hip — worth noting if you're petite or curvy

STYLIST'S TIP

Ami's menswear is genuinely worth exploring if you love an oversized, boxy silhouette. I've bought an Ami men's knit in a small before now — it had exactly the kind of relaxed, dropped-shoulder shape that the women's version didn't quite capture. Size down two sizes from your usual womenswear for a roomy-but-intentional fit.

Ami Paris Women's Size Guide

Ami Paris SizeBust (cm)Waist (cm)Hips (cm)Approx. UK Equivalent34 (XS)80–8361–6487–90UK 6–836 (S)84–8765–6891–94UK 8–1038 (M)88–9169–7295–98UK 10–1240 (L)92–9573–7699–102UK 12–1442 (XL)96–10077–81103–107UK 14–16

*Measurements are approximate and based on Ami Paris's published sizing data. Individual garment cuts vary — always check the specific product's measurements before ordering.

Which Ami Styles Have the Trickiest Sizing?

Not all Ami pieces will catch you out equally. Here's where to be most careful — and where you can relax a little:

Tailored trousers and cigarette pants: These run slim through the hip and thigh with a long inseam. If you're curvy or petite, size up and plan for a hem — it's worth it.
Structured blazers: Ami's tailoring is cut close through the chest and shoulders. Don't size up expecting extra room through the body — go by your shoulder measurement first and foremost.
Knitwear: Often slimmer through the shoulders than you'd expect from the styling. If you're broad-shouldered, try before you buy or go up a size.
Denim: Ami's jeans tend to run true to European size but slim in the leg — more tapered than relaxed. If you prefer a less fitted jean, size up or explore their wider-leg options.
T-shirts and casual tops: These are usually the most forgiving in the range and can be ordered true to size. The cotton quality is excellent and has a little give.
Coats and outerwear: Generally cut with layering in mind, so often easier to size. True to size works well here, especially if you're wearing fine knitwear underneath.

How Does Ami Paris Compare to Similar Brands?

If you already shop at brands with a similar elevated, understated aesthetic, here's how Ami stacks up against them in terms of fit:

Cos — COS also uses European sizing and has a similarly slim, architectural cut. If you know your COS size, it's your most reliable starting point for Ami. The two brands are very comparable in sizing.
Mango — Mango runs slightly more generously than Ami, particularly in dresses and casualwear. If you're a Mango 12, you might find yourself in an Ami 40 rather than a 38.
Zara — Zara is notoriously variable, but as a rough guide, Zara sizes slightly smaller than UK high street but not quite as slim as Ami. Expect to potentially size up at Ami if Zara fits you well.
Massimo Dutti — A very useful comparison point. Both are European, both have a refined, minimalist aesthetic, and the sizing is very similar. If Massimo Dutti fits you well in a 38, try the same at Ami.
Reiss — Reiss runs true to UK sizing and is generally more generous through the body than Ami. A Reiss 10 may want to try both 36 and 38 at Ami.
Arket — Arket (part of the H&M group) uses Scandinavian sizing which tends to be generous and relaxed. Expect to size down slightly at Ami compared to your Arket size.
Ted Baker — Ted Baker uses its own sizing system (0–5) and runs quite true to UK sizing. Moving to Ami's European sizing will likely mean going up a number.
Hobbs — Hobbs is generous in its sizing, cut for a more classic UK body proportion. Ami's slim Parisian cut will feel noticeably different — size up from your usual Hobbs.

Two Independent Brands Worth Knowing

If Ami Paris has captured your heart but you're after something a little different (or want to explore before committing to that price point), these two independent labels deserve a place on your radar:

Officine Générale — Another quietly brilliant Parisian label with a very similar ethos to Ami: understated, beautifully made, worn by people who've stopped trying to shout about it. Their sizing is comparable to Ami's, and their tailoring is exceptional. Worth exploring for blazers and trousers in particular.
Beaumont Organic — A UK-based sustainable brand that does the Ami thing — relaxed, contemporary, effortless — at a more accessible price point and with UK sizing. A brilliant entry point if you're building that pared-back wardrobe and want pieces that feel considered rather than logo-heavy.

My Top Tips for Getting Your Ami Paris Size Right

Measure your bust and shoulders specifically — Ami's cuts are slim through the upper body, and this is where most people come unstuck
Check each product's individual measurements on the Ami website — they publish garment measurements for most pieces, which is far more useful than a size chart alone
Don't assume your COS size is your Ami size — they're similar but not identical across all categories
Consider the menswear if you like an oversized, dropped-shoulder silhouette — it's a genuinely different (and often better) cut for that aesthetic
When buying online, order two sizes if you can — Ami's return process is straightforward and it's genuinely worth comparing them in person
For trousers, measure your inseam — Ami cuts long, and this can catch petite women out

Take the Guesswork Out of Sizing — Use Tellar

Navigating European sizing when you're used to UK labels is exactly the kind of thing that leads to expensive mistakes. That's where Tellar.co.uk comes in — and it's genuinely changed how I shop online.

Tellar is the UK's leading free sizing tool, matching your measurements to over 1,500 brands in seconds. No more cross-referencing size charts, no more returns anxiety.

Here's how simple it is:

Measure once — bust, waist, and hips, or use your existing size in a brand you already know
Use the Store Size Lookup tool to get your precise recommended size in Ami Paris and 1,500+ other brands instantly
Always free — no downloads, no sign-up faff, works straight in your browser

And if you're after more fashion guidance, the Tellar Fashion Hub is packed with honest, unsponsored content from our stylists — brand comparisons, fabric guides, style advice by body shape. No ads, no brand partnerships skewing the recommendations. Just straight-talking style content.

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