Sessùn uses French sizing, numbered 34 to 42 on most pieces, and the brand’s own advice is simple: take your usual size, and if you fall between two, choose the larger. That is the starting point. The finer detail, which differs by cut, fabric and garment, is what separates a piece that feels effortless from one that sits slightly off. This guide sets out how to read the numbers, how they sit alongside Australian sizes, and how to decide with confidence when you cannot try the piece on first.
TL;DR
- Sessùn sizes are French (typically 34, 36, 38, 40, 42), not Australian. Convert before you order, and check the size chart on each product page.
- The brand’s guidance is to choose your usual size, and the larger one when between two. Individual pieces can carry their own note, such as “runs small”.
- Fit varies by item: some Sessùn pieces are relaxed and fluid, others are deliberately structured, so one label size can feel different across a blouse, a jean and a dress.
- Measure yourself first, compare with the chart, then read the fit notes and fabric before choosing.
- Not sure? Our size conversion guide walks through the measuring step.
Table of Contents
- Why Sessùn sizing deserves a closer look
- Reading French sizes as an Australian shopper
- The three-step method we recommend
- Sizing by garment: what to expect
- Between two sizes: how to decide
- Climate and wardrobe: sizing for Australian seasons
- Our perspective
- Shop Sessùn at Edito
- Building a capsule wardrobe around one brand
- FAQ
- Sources
Why Sessùn sizing deserves a closer look
Sessùn was founded in 1996 in Marseille by Emma François-Grasset, and the brand is described as soulful, accessible and refined, with Mediterranean influences and a devotion to craftsmanship. It is a French label, and its sizing follows French conventions rather than the Australian numbering most of us grew up with.
The brand’s philosophy is also part of the answer. Reporting on the label describes it as favouring consistency over trends, with a French soul rather than a strictly Parisian polish. In practice, that means many pieces are cut for ease: a shirt that drapes, trousers that skim rather than cling. Cut matters as much as the number on the label.
This is why an Australian shopper is better served by thinking in terms of garment and silhouette than by a single “Sessùn size”. The same French 38 can be generous in a flowing blouse and closer in a tailored jean.
Reading French sizes as an Australian shopper
French sizes run in even numbers, and each step is a single size up or down. As a general pattern across European brands, a French 36 sits near an Australian 8, a 38 near a 10 and a 40 near a 12, but conversion tables differ from label to label, so treat this as orientation rather than a rule. The reliable method is to use the chart on the specific product page, and to measure yourself against it.
Here is a practical way to place yourself:
| If you usually wear (AU) | Start by looking at (FR) | Then check |
|---|---|---|
| 6 | 34 | Bust and waist against the chart |
| 8 | 36 | Shoulder width on structured pieces |
| 10 | 38 | Hip measurement on trousers and denim |
| 12 | 40 | Sleeve and body length |
| 14 | 42 | Fit note on the product page |
The table is a starting point only. Our own guide to converting European designer sizes explains why measuring first saves time, and it is worth a read before your first order from any European label.
The three-step method we recommend
- Measure. Use a soft tape for bust, waist and hip, and for trousers, the inseam of a pair you already love. Measure over light clothing, standing naturally.
- Compare with the chart. Match your measurements to the French size on the product page, not to your Australian size by assumption.
- Read the fit notes. Look for remarks on the item itself. On the brand’s own site, a jean may carry a note that it runs small, in which case the guidance to size up between two sizes matters even more.
A fourth point, often overlooked, is the model information. Product pages commonly state the model’s height and the size she wears. If you are close to her height, you can judge length far more accurately.
Sizing by garment: what to expect
Sessùn’s range is broad, so the sensible approach is to size by category. What follows is how we think through each, as a framework rather than a promise about any one style. Always defer to the notes on the product page.
Blouses and shirts
Blouses in viscose and similar fabrics are generally cut for movement, and fabric drape does much of the work. If you prefer a slightly closer line, your usual size is the natural choice. If you like the relaxed, slightly undone look associated with the brand, consider the same size and let the fabric fall. Between two sizes, the brand’s advice to choose the larger is wise for anything you plan to layer under knitwear in an Australian winter.
The Savi Blouse in Sandblack and the U Shirt in Blazer Blue are two examples to compare against the chart on their pages. For the wider selection, our tops collection gathers the current edit.
Jeans and trousers
Trousers are where sizing questions arise most, because hip, rise and inseam all interact. Waist measurement alone can mislead. If you are between sizes, the larger is usually the more comfortable and can be taken in; a pair that is too small cannot be let out. Denim with any stiffness may soften with wear, so a close but comfortable fit at purchase is a reasonable aim.
The Sailnim Jean in Stoneblue is a good piece to test this approach on: measure your hip, check the chart, and read the fit note. You can browse the full range in our Sessùn pants collection or the broader pants edit.
Dresses
Most Sessùn dresses are priced between €175 and €245 according to a 2024 report, which positions them as considered purchases that reward getting the size right. For dresses, the key measurements are bust, waist (if the style is defined at the waist) and length. A wrap or tie style forgives more than a fitted bodice. Where a dress is gathered or flowing, sizing to your bust is the safer choice. Explore our dresses collection to compare styles.
Knitwear and layers
Knit sizing depends on gauge and fibre. A fine knit may sit closer to the body; a chunkier one tends to be roomier. For Brisbane winters, which are mild, a lighter knit worn alone suits your usual size. For cooler southern states, consider whether you will layer a shirt underneath, and size accordingly.
Between two sizes: how to decide
The brand’s own guidance is to choose the larger size when torn. We agree, with a few refinements:
- Choose the larger for blouses, shirts and anything you will layer, and for trousers if your hips are fuller than your waist.
- Choose your usual size for pieces designed to be fluid and oversized, where extra size can overwhelm the silhouette.
- Consider tailoring. A local alterations specialist can take in a waistband or shorten a hem easily. Letting out is far harder.
- Think about fabric. Stretch or soft fabrics forgive; rigid cotton, linen and structured weaves do not.
Climate and wardrobe: sizing for Australian seasons
Sizing is not purely a matter of measurement; it is also about how you will wear the piece. In a Queensland summer, you may want a looser, airier fit that skims the body. Further south, you may layer a blouse under a knit or jacket, and a little extra room is welcome. Our seasonal notes on Sessùn Summer 2026 and Autumn Winter 2026 show how the collections are styled across those moments.
Our perspective
At Edito we curate French and European labels with a focus on quality, craftsmanship and enduring wearability, and Sessùn is one of the brands at the heart of that edit. We find that sizing difficulty rarely comes from the label itself. It comes from the gap between a number and a silhouette.
Our advice to Australian women is to treat the size chart as the beginning of the conversation. Measure, read the product notes, and think about how you want the piece to fall: close and defined, or relaxed with allure and ease. A French 38 in one garment is not a French 38 in another, and that is part of the savoir-faire, since each piece is cut for its own character rather than to a single template.
We would rather you take five minutes over the chart than spend weeks with something that nearly fits. If you are unsure, our Sessùn stories and collections page is a good place to see how the pieces are worn, and our Brisbane boutique welcomes visits for those who want to see the pieces first.
— Mickael Martin
Shop Sessùn at Edito
We stock Sessùn alongside other considered European labels, with clothing, shoes and accessories curated for Australian women and shipped across the country. Begin with the Sessùn pants collection, or browse the full clothing collection to build a wardrobe around pieces you will wear for years.
Building a capsule wardrobe around one brand
Once you know your Sessùn size in one category, you gain a useful reference. If a blouse in a French 38 works for you, note how it fits across the shoulder and bust. Use that as a benchmark when you consider a dress or jacket from the same label. Keep a short note in your phone: your measurements, the sizes that worked, and any item that ran small or large.
This approach turns a one-off purchase into a wardrobe system. A jean, a shirt and a blouse in sizes that suit you can anchor a capsule, with accessories and a bag layered on top. Our accessories collection is a natural next step.
FAQ
Does Sessùn run true to size?
Sessùn’s guidance is to choose your usual size, and the larger one if you are between two. Fit varies by piece, though, and some items carry a note that they run small. Always read the note and the chart on the specific product page.
What is a Sessùn 38 in Australian sizes?
As a general guide across European labels, a French 38 sits near an Australian 10, but charts vary between brands and styles. Use the chart on the product page, and measure yourself first. Our conversion guide explains the steps.
Should I size up in Sessùn jeans?
If you are between sizes, the larger is generally the safer choice, particularly when your hips are fuller than your waist. Check whether the style carries a fit note, and compare the hip and inseam measurements to a pair you already own.
Where is Sessùn from?
Sessùn is a French brand, founded in Marseille in 1996 by Emma François-Grasset. Its Mediterranean roots are part of its relaxed, refined identity.
Sources
- Sessùn | Quadrivio Group
- French Brand Sessùn Sells Majority Stake to Italian Fund, Eyeing International Expansion | BoF
- Jeans Seakey o Vintage Blue | Sessùn
