Sisley Size Guide: What Size Am I in Sisley? Fit Advice & UK Sizing Help

Known for its clean Italian tailoring, city-smart silhouettes and a fashion-forward edge, Sisley (part of the Benetton Group) balances elevated basics with effortless cool. Whether you're shopping for a fitted blazer, stretch denim or a structured dress, one thing is clear:

Does Sisley run big or small—and what’s the right size for you?

tellar.co.uk helps you find your size in thousands of brands, including Sisley. You’ll receive a free tape measure, set up your profile once, and get accurate, cut-specific size recommendations every time you shop. It’s always free. No guesswork. No returns.

In this guide, we’ll walk through how Sisley sizing compares to UK sizes, what to expect in each category, and how to ensure your best fit using Tellar.

About Sisley: Modern Italian Tailoring With a Twist

Founded in Paris and now headquartered in Italy, Sisley blends sharp, continental tailoring with contemporary urban style. You’ll find:

Fitted blazers and coats
Slim trousers and jeans
Body-skimming dresses
High-stretch basics and knits
Styles that feel sophisticated—but never overdone

But with EU sizing, slim cuts, and frequent use of rigid or semi-stretch fabrics, getting the right fit is key—especially if you're shopping online.

Is Sisley True to Size?

Sisley generally runs true to size, but the brand leans towards slim, close-to-the-body cuts, particularly in tailoring, trousers and shirts. Some knitwear and jersey pieces offer more forgiveness, but trousers and blazers often feel fitted for a more tailored look.

Fit Snapshot:

Blazers & jackets – slim through the shoulders and waist
Trousers & jeans – true to size, but fitted at hip and thigh
Dresses – vary between bodycon and relaxed cuts
Shirts & tops – may feel snug at bust or upper arm
Knitwear – regular or slightly loose fit

📏 Check your Sisley size now using Tellar’s store size lookup tool. We use your measurements, cut preferences, and garment-specific logic to find your perfect size.

UK to Sisley Size Conversion

UK Size	EU Size (Sisley)	Fit Notes
UK 6	EU 34	May feel slim in bust/hip
UK 8	EU 36	Fitted in jackets and trousers
UK 10	EU 38	True to size in most dresses
UK 12	EU 40	Roomy in knits, fitted in tailoring
UK 14	EU 42	Still structured in trousers
UK 16	EU 44	Accurate across knits, relaxed tops

🎯 Create your free Tellar profile and we’ll guide you to your ideal size in Sisley based on your bust, waist, hips, height and fit preference.

How Sisley Fits by Category

1. Blazers & Tailored Jackets

Clean-cut, fitted through the shoulder and waist, often fully lined.

Fit: Slim and tailored
Size Tip: True to size or size up if broad-shouldered
Tellar Tip: Shoulder width + layering preference are key to blazer fit

2. Trousers & Jeans

High-rise, slim leg or tapered trousers in stretch or cotton-blend fabric.

Fit: Fitted at waist and hip
Size Tip: Stick to your UK-to-EU size; size up if curvier
Tellar Tip: Tellar calculates rise, thigh width and hip curve for smooth fit

3. Dresses

Shift, sheath, wrap and shirt dresses in crepe, cotton or jersey.

Fit: Varies by style—fitted in tailoring, true to size in jersey
Size Tip: True to size overall; size up in more structured cuts
Tellar Tip: Bust-to-hip ratio and length calculated for ideal coverage

4. Tops & Blouses

Often collared or button-down, sometimes semi-sheer or slim through the arm.

Fit: Regular to slim
Size Tip: Size up if full-busted or broad-backed
Tellar Tip: Bust width and sleeve length fine-tuned by Tellar’s engine

5. Knitwear

Cotton, wool or viscose-based sweaters and layering pieces.

Fit: Relaxed or standard fit
Size Tip: Stay true to size
Tellar Tip: Drape and length preference accounted for

Why Sisley Sizing Can Feel Confusing

Sisley uses European sizing and blends both tailored and casual collections—leading to:

Variation between fitted tailoring and relaxed jersey
No UK size conversion shown on many international retailers
Rigid fabric blends with no stretch
No product-specific garment measurements online

Rather than guessing or using generic conversion charts, tellar.co.uk matches your exact body shape to the garment’s actual cut and fabric behaviour—so you always order the right size.

🎁 Bonus: We’ll send you a free tape measure to get started.

Popular Sisley Pieces (and How They Fit)

⭐ Tailored Single-Breasted Blazer

Slim-cut, lightly structured

Fit: Tailored at shoulder and waist
Tellar Tip: Uses shoulder width and bust size for best fit across arms

⭐ High-Rise Skinny Trousers

Cotton or tech-blend, ankle-length

Fit: Slim at waist, fitted in thigh
Tellar Tip: Rise, hip curve and stretch level calculated

⭐ Cotton Poplin Shirt

Classic button-down, darted waist

Fit: Slim and clean
Tellar Tip: Bust and shoulder width = no pulling, no gaping

⭐ Sleeveless Sheath Dress

Office-appropriate cut, zip closure

Fit: Close fit in bust and waist
Tellar Tip: Torso length and bust-to-hip ratio matched

Final Verdict: What Size Am I in Sisley?

You’ll likely stick to your standard UK-EU conversion—but some items (especially tailoring) may feel tighter if you're curvier or broader. Knitwear and relaxed tops are more forgiving.

🎯 Let tellar.co.uk match your exact shape to Sisley—and thousands of other brands. No returns. No guesswork.

✅ Ready to Find Your Sisley Size?

Find your size in thousands of brands real-time. It’s free & easy.