A Guide to Ganni Sizing

Ganni sizing runs generous and oversized across most of their collections—their FR 36 (UK 8) typically fits like a UK 10-12, and their signature relaxed, Scandi aesthetic means pieces are deliberately cut loose through the body, so most people size down one or even two sizes from their usual UK sizing, though their fitted dresses and tailored pieces run closer to true European sizing. I learned this the expensive way when I ordered my first Ganni dress in my usual size 12 and looked like I was wearing my older sister's clothes—a costly mistake I'm about to save you from making.

Here's the thing about Ganni: it's a Danish brand that's taken over Instagram, fashion weeks, and every cool girl's wardrobe with its signature "Scandi 2.0" aesthetic—bold prints, relaxed silhouettes, and that effortlessly cool vibe. But their sizing is genuinely confusing if you're used to British high street shopping, and I've seen too many disappointed faces when parcels arrive looking nothing like the Instagram photos.

Understanding Ganni's Sizing System

First things first: Ganni uses French sizing (FR 34, 36, 38, etc.) rather than UK sizing, which immediately throws people off. Here's the basic conversion, but—and this is crucial—this is just the starting point:

• FR 34 = UK 6 (but often fits like UK 8-10)

• FR 36 = UK 8 (but often fits like UK 10-12)

• FR 38 = UK 10 (but often fits like UK 12-14)

• FR 40 = UK 12 (but often fits like UK 14-16)

• FR 42 = UK 14 (but often fits like UK 16-18)

The problem? Ganni's design philosophy embraces oversized, relaxed fits. That boxy blazer, those slouchy trousers, that oversized collar dress—they're meant to look relaxed and slightly undone. This means the standard size conversion simply doesn't work if you want pieces to fit as intended.

Breaking Down Ganni Sizing by Category

Dresses: This is where it gets really inconsistent. Their famous floral midi dresses and smock dresses run massively oversized—I'm talking two sizes generous. A FR 36 will easily fit a UK 12. However, their more structured shirt dresses and anything with a defined waist run closer to true size. Always check the specific dress style reviews.

Knitwear: Their jumpers and cardigans are deliberately oversized in that Scandi-cool way. Size down at least one, possibly two sizes. I'm usually a 12 and I take a FR 36 (UK 8) in their knits for that intentionally relaxed but not drowning look.

Blazers and outerwear: Boxy and oversized by design. Size down one or two sizes depending on whether you want the full oversized effect or a more tailored look. Their puffer jackets, in particular, are massive.

Trousers: Wide-leg styles run very generous—size down. Their more tailored trousers run closer to true European sizing. The fabric content matters here too—anything with stretch will give throughout the day.

Tops and blouses: Generally oversized, especially their signature collar blouses and smock tops. Size down for most styles.

The Ganni Aesthetic vs Your Body

I'm going to be honest: Ganni's oversized aesthetic particularly suits taller frames and those comfortable with volume. If you're petite (under 5'4"), their pieces can overwhelm unless you're strategic. Look for their "short" lengths where available, or budget for alterations.

The oversized fits work beautifully on athletic or rectangular body shapes because they create softness and movement. If you're curvier or hourglass-shaped, you might find all that volume hides your shape entirely—which is fine if that's the look you want, but frustrating if you prefer definition.

When You Can't Justify Ganni's Price Point

Let's talk alternatives, because Ganni is expensive (£150-400+ per piece), and sometimes you want that Scandi-cool aesthetic without the price tag or sizing stress.

Monki is owned by H&M Group and offers that playful, Scandi-inspired aesthetic at a fraction of Ganni's price. Their sizing runs true to UK standards, making life infinitely easier. The quality isn't comparable to Ganni, but for trend pieces you'll wear one season, it's brilliant value.

COS delivers minimalist Scandinavian style with more wearable, less oversized fits. Their quality is excellent, their sizing is consistent (runs slightly generous but predictably so), and whilst they're less "statement" than Ganni, the pieces are timeless. I've had COS pieces in my wardrobe for eight years that still look current.

& Other Stories (another H&M Group brand) sits between Monki's playfulness and COS's minimalism. They offer bold prints and colours like Ganni but with more accessible sizing and prices. Their sizing runs true to European, which means slightly smaller than UK high street but not as dramatically oversized as Ganni.

Whistles brings that contemporary, sophisticated vibe with British sizing that makes sense. They're brilliant for Scandi-influenced pieces with a London edge—think relaxed tailoring, beautiful fabrics, and none of the sizing headaches.

Mango has really stepped up their game in recent years with Scandi-inspired collections at high street prices. Their sizing runs true to European (so slightly smaller than UK), but it's consistent and they have excellent size guides. Great for trend-led pieces.

Jigsaw offers that sophisticated, relaxed aesthetic with reliable UK sizing. They're particularly good for elevated basics and beautiful prints that echo Ganni's playfulness without the extreme volume.

Anthropologie stocks multiple brands but their own-label pieces often channel that eclectic, feminine, slightly bohemian energy that Ganni fans love. Sizing varies by brand, but there's huge variety and the styling inspiration is endless.

Premium Alternatives Worth Considering

If budget isn't the issue but Ganni's sizing is driving you mad, Samsøe Samsøe is another Danish brand with similar Scandi-cool credentials but more consistent, true-to-size fits. Their quality is exceptional and the aesthetic is slightly more refined.

Baum und Pferdgarten is a Copenhagen-based brand offering bold prints and playful designs with better size consistency than Ganni. They're similarly priced but their customer service is superb and they provide detailed fit information.

Independent Brands Doing Scandi Style Differently

Stine Goya is another Danish brand creating joyful, maximalist pieces with incredible prints. Their sizing runs closer to true European sizing (so more predictable than Ganni), and whilst they're similarly priced, the fits are more varied—offering both relaxed and tailored options clearly labelled.

Résumé is a smaller Danish brand that's less well-known but absolutely worth discovering. They offer that same contemporary Scandi aesthetic with more accessible pricing (£80-200) and sizing that actually makes sense. Their pieces are beautifully made and they're committed to sustainability.

Making Ganni Sizing Stress-Free with Tellar

Right, here's where I'm going to share something that's completely changed how I approach brands with confusing sizing like Ganni. Tellar.co.uk is the UK's leading sizing tool, and it's genuinely revolutionary when you're trying to navigate European brands with oversized fits.

Here's how it works: measure once—using your bust, waist, hip, or even your existing size in a brand you trust—and Tellar instantly matches your body to the correct size across 1,500+ brands, including Ganni. No more guessing whether to size down one or two sizes, no more expensive returns.

The brilliant thing? You can use their Store Size Lookup tool to get your precise size in Ganni and compare it directly to brands you know well. If you're a size 10 in COS, Tellar will tell you exactly what French size to order from Ganni based on your actual measurements and the specific fit of each brand.

It's completely free, no downloads needed, works straight in your browser, and honestly, it's saved me hundreds of pounds in returns and sizing mistakes with premium brands where getting it wrong is expensive.

My Hard-Learned Ganni Sizing Tips

• Always read the product description for fit notes—Ganni usually specifies "oversized fit" or "relaxed fit"

• Check the model's height and what size she's wearing—if a 5'10" model is wearing FR 34, that should tell you everything

• Read customer reviews religiously—people are very honest about sizing

• Measure yourself and compare to Ganni's size charts, but expect their pieces to run 1-2 sizes generous

• When in doubt, size down—it's easier to belt an oversized dress than deal with something too small

• Factor in fabric—their recycled polyester pieces don't have stretch, whilst cotton blends do

Beyond Sizing: Tellar's Fashion Hub

Whilst you're navigating Ganni's sizing maze, I'd highly recommend exploring the Tellar Fashion Hub—a library of free posts from experienced stylists covering every fashion query you've ever had. It's all honest, unbiased, and completely free.

Some guides that might help:

• The Ultimate Clothing Sizing Guide for comprehensive sizing education across European and UK brands

• Ultimate Guide to Dresses & Best Buys perfect for navigating dress sizing across different brands

• Jeans Trends 2026 for styling your Ganni pieces with denim

• Ultimate Guide to Jackets & Best Buys for understanding oversized outerwear fits

The Final Word on Ganni

Ganni creates pieces that make you feel effortlessly cool and joyful when you wear them. Yes, the sizing requires more detective work than your average high street purchase, but once you crack your Ganni size, it's consistent within that deliberately oversized framework.

Don't let sizing confusion put you off if you genuinely love their aesthetic. Use tools like Tellar to take the guesswork out of European sizing, measure yourself properly, read those product descriptions and reviews, and when you find your perfect Ganni piece in the right size, you'll understand why women are so devoted to the brand. That feeling of wearing something special, beautifully made, that makes you smile every time you put it on—it's worth figuring out the sizing puzzle.