What Is Sizing Like at Loulou de Saison clothing?

The short answer: Loulou de Saison is a Parisian label, so it’s cut to French sizing rather than UK — their size S sits at roughly a UK 10 (FR 38) — and the knitwear, which is the beating heart of the brand, runs deliberately relaxed, with dropped shoulders and what the label itself calls an “ample fit”. If you want that slouchy, off-duty look it’s known for, take your usual size. If you like your knits neat and close to the body, you can happily size down.

A quick word on the brand

Loulou de Saison was founded by Parisian influencer Chloé Harrouche, who launched the label because she couldn’t find the elevated, easy knitwear she had in her head. That origin still shows: neutral palettes, soft cashmere, classic shapes and pieces built to slot straight into a capsule wardrobe. It has since grown into full ready-to-wear — trousers, tailoring, dresses, swimwear, shoes and bags — but knitwear is still where it shines, and where the fit questions tend to land.

It’s a premium price point — jumpers and trousers sit comfortably in the few-hundred-pounds bracket — so getting the fit right first time genuinely matters.

How the knitwear fits

This is the bit to read twice. The brand describes much of its knitwear as having an “ample fit” with drop shoulders, and that’s exactly how it wears:

True to size for the intended look. Loulou’s own notes say pieces run true to size, and their 1m75 model wears an S. Take your normal size for that relaxed, gently oversized silhouette.
Size down for a neater fit. Because the cut is generous through the shoulder and body, anyone who finds drop-shoulder knits overwhelming can drop a size and still get plenty of length in the sleeve.
Mind the French labelling. Sizes are marked in French/EU terms, so go by the international XS–XL marking rather than the EU number if the figure looks unfamiliar.

How the tailoring and trousers fit

The trousers lean into that French, elongated line — straight legs, loose-fit elastic-waist styles, ankle-length cuts. They’re forgiving through the waist but designed to skim rather than cling. If you’re between sizes on the bottom half, stay true to size and let the elastic and relaxed cuts do the accommodating for you.

Dresses, silk and shoes

Silk dresses and lighter ready-to-wear follow the same true-to-size logic but with less ease than the knits, so there’s no need to size down here. Shoes run in standard EU sizing, and the sandals in particular come up true — take your normal European size and you’ll be fine.

My honest take as a stylist

I’ll be straight with you: French knitwear and I have history. Years ago I bought a beautiful Parisian jumper in my “normal” size, assumed it would be snug, and ended up with something I could have shared with a flatmate — drop shoulders practically down to my elbows. Lesson well and truly learned. With a brand like Loulou de Saison, the relaxed fit is the point, not a fault, so the trick is deciding before you buy whether you want slouchy-and-cosy or sleek-and-tucked. For a tidy, tucked-in look, size down. For that throw-it-on-with-jeans Sunday feeling, take your size and enjoy every inch of it.

Where else to shop this look

If the price tag gives you pause, or you simply want to build a wardrobe around it, here’s where I’d send you.

High street and contemporary

Massimo Dutti — the closest high-street match for elevated neutral knitwear and clean tailoring.
Me&Em — brilliantly considered jumpers and trousers with that polished, grown-up finish.
Mint Velvet — relaxed-luxe knits in exactly the soft, neutral palette Loulou trades on.
Jigsaw — quietly excellent for quality knitwear that genuinely lasts.
The White Company — my go-to for cashmere basics in chalk, oatmeal and stone.
Hush — French-leaning relaxed staples at a gentler price point.
Mango — surprisingly strong for of-the-moment French-girl knits and trousers.

Premium

Sézane — the Parisian benchmark; if you love Loulou, you’ll fall hard for this.
Ba&sh — French, easy and elegant, with lovely knit-and-trouser pairings.
By Malene Birger — elevated European knitwear with a touch more edge.

Luxury and designer

Totême — pared-back Scandinavian minimalism and the quiet-luxury knit of the moment.
Max Mara — for camel coats and cashmere that will outlive every passing trend.

And two off-radar names worth knowing

&Daughter — a small British-Irish label making some of the most beautiful, considered knitwear around.
L’Envers — a Paris-based, slow-fashion knitwear brand with the same neutral, timeless spirit as Loulou, and made to last a lifetime.

Find your exact Loulou de Saison size in seconds

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