How to Find Your Perfect Fit at Alysi

BRAND SIZING GUIDE · ITALIAN DESIGNER

By Ella Blake | Tellar Fashion Hub | March 2026

Alysi uses Italian sizing — and if you've ever been burned by Italian sizing before, you'll know it tends to run noticeably smaller than UK sizing. As a general rule, size up by at least one, sometimes two sizes from your usual UK label.

I discovered Alysi on a trip to Milan a few years ago — one of those wonderful, slightly accidental boutique finds where you walk in out of curiosity and leave genuinely smitten. The brand has that particular Milanese quality I find almost impossible to resist: relaxed but utterly polished, with fabrics that feel considered rather than just expensive. A silk blouse that drapes like liquid. Tailored trousers with just the right amount of ease. Knitwear that doesn't pill after three wears. It's the kind of label that serious dressers whisper about rather than shout.

Of course, I promptly got my sizing completely wrong on my first online order back home. I assumed Italian sizing would follow the same logic as the Italian brands I already owned. It did not. A size 40 arrived, I tried it on, and — well, let's just say the zip had other ideas. Back it went. Lesson very thoroughly learned. So here's everything I wish I'd known before that first purchase.

Understanding Alysi's Sizing System

Alysi uses standard Italian sizing, which runs considerably smaller than UK sizing. Here's the essential context before you look at any size chart:

Italian sizing typically runs two sizes smaller than UK sizing — so an Italian 40 is broadly equivalent to a UK 10, not a UK 8 as you might expect.
Alysi's silhouettes often have a relaxed, slightly oversized quality — this is by design and part of the brand's identity. Don't be tempted to size down just because the label looks large.
The brand caters well to a slim to medium frame through the shoulders and bust — if you're broader across the shoulders, always check individual measurements rather than relying on the size label.
Alysi's trousers are cut with a generous leg width and a mid-to-high rise — they're beautifully flattering and tend to be more forgiving at the hip than many Italian labels.
When in doubt — and I really mean this — always size up. Their pieces are designed to have an elegant looseness, and a slightly larger size will look intentional rather than sloppy.

💡 Ella's tip: Alysi's knitwear is honestly some of the loveliest I've come across at this price point — fine gauge, beautiful drape, and it holds its shape brilliantly. This is a great entry point to the brand because the sizing is slightly more relaxed and forgiving than the tailored pieces. Start here if you're ordering for the first time.

Alysi Size Conversion Chart

Alysi (IT)UK SizeEU SizeUS SizeBust (cm)Waist (cm)Hip (cm)3663428062883883648466924010386887096421240892741004414421096781044616441210082108

These conversions are a reliable starting point, but always cross-reference with your actual body measurements rather than your usual clothing size — particularly if you're between sizes or if the piece is in silk or another unforgiving fabric.

How Different Fabrics Affect the Fit

Alysi works predominantly with natural, high-quality fabrics, and each behaves quite differently on the body. This matters more than you'd think when choosing your size:

Silk and silk blends: These are some of the brand's most beautiful pieces and have very little stretch. Measure your bust carefully — silk will sit exactly where it lands and show up any fit discrepancy immediately. If you're between sizes, go up.
Fine-gauge knitwear: Has a natural elasticity and is generally the most forgiving across the Alysi range. True to size, and the drape is deliberately relaxed — don't panic if it looks oversized on the hanger.
Cotton and linen: Runs firmly to size with very little give. Linen in particular will feel snug initially and ease slightly with wear, but don't bank on it loosening dramatically.
Jacquard and structured wovens: These are cut quite precisely and leave very little room for error. Check the individual garment measurements carefully before ordering in these fabrics.
Jersey and soft viscose blends: More forgiving than silk but still relatively close to the body in Alysi's cuts. True to size is generally the right call here.

Fit Quirks by Category — What to Watch For

Knowing how each type of garment fits can save you the return admin. Here's my category-by-category breakdown after years of getting it right and, occasionally, very wrong:

Blouses and tops: If you carry more volume through the bust, size up from the conversion chart. Alysi's tops are cut with a fairly narrow shoulder seam and a relaxed body — the proportions are lovely on a slender to medium frame, but the bust can feel restrictive if you don't account for it.
Trousers: One of the brand's real strengths. The wide-leg and straight-leg cuts are generous and well-proportioned — they work beautifully on most body types. Go true to your converted size here; the waistband is usually the fitting point to focus on.
Dresses: Size to your bust, as Alysi's dresses are generally more relaxed through the waist and hip. The fluid, Italian-holiday quality of their dress shapes means fit through the shoulders and bust is what really matters.
Knitwear: The most forgiving category. True to your converted Italian size, and enjoy the fact that this is the one area you don't need to overthink it.
Coats and outerwear: Size up one from your converted size to allow for layering — and to honour the intentionally relaxed silhouette, which is really where Alysi's outerwear shines.

💡 Practical tip: If you're ordering from a UK or European stockist rather than the Alysi website directly, check whether they list measurements in the item description — many do, and it's by far the most reliable guide for expensive pieces you can't try on first.

Love the Alysi Aesthetic? Here Are My Recommendations

The Alysi woman has exceptional taste — that effortless Italian minimalism with real attention to fabric and cut. If you love the brand's aesthetic but want to build out your wardrobe at various price points, here are labels I genuinely rate and return to:

Cos — The high street's closest answer to Italian minimalism. Considered cuts, quality fabrics for the price point, and a restrained palette that slots perfectly alongside Alysi pieces. Sizing is more UK-standard, which is a relief.
Massimo Dutti — Consistently brilliant for the kind of fluid silk blouses and tailored separates that sit in the same wardrobe universe as Alysi. The quality punches above its price, and their seasonal silk ranges are always worth a look.
Jigsaw — Quietly one of the best British labels for fabric-led, polished dressing. Their linen and silk pieces have a similar nonchalant elegance to Alysi, and the sizing is reliable UK standard throughout.
Anthropologie — For the more playful, print-led side of Alysi's offer. Anthropologie does beautiful, considered prints on quality fabrics, and the breadth of their range means you'll always find something interesting.
Hush — One of my personal favourites for relaxed, luxurious everyday dressing. Their knitwear and loungewear-meets-smart separates are exactly the kind of effortless pieces that complement an Alysi wardrobe beautifully.
Phase Eight — Particularly strong for the dressier end of what Alysi does — fluid occasion dresses and elegant evening separates at an accessible price. Reliable sizing and genuinely flattering cuts.
Mint Velvet — Great for that relaxed-luxe, Italian-holiday feel at a UK high street price. Their wide-leg trousers and silk-mix blouses have a similar laid-back quality to Alysi's key pieces.

For something genuinely off the beaten track, I'd direct you to Poème Bohémien — a small Italian label producing quietly extraordinary knitwear and separates with the same understated craftsmanship you find in Alysi. Very limited stockists in the UK but well worth seeking out. And Baserange, a Copenhagen-based brand working almost exclusively in natural, undyed fabrics — minimal, body-conscious, and the kind of label that Alysi devotees tend to absolutely love.

My Final Verdict on Shopping Alysi

Alysi is one of those brands that genuinely rewards the effort of getting your sizing right. The pieces are beautiful, the fabrics are exceptional, and the aesthetic has a lasting quality that makes every purchase feel worthwhile. The key — and I cannot stress this enough — is to ignore the size label entirely and work from your actual measurements. Italian sizing is not trying to trick you, it's just a different system. Once you understand it, shopping Alysi becomes an absolute pleasure rather than a very expensive gamble.

And if the thought of converting between Italian, UK and EU sizes whilst trying to remember your bust measurement in centimetres sounds like too much admin — there is a much easier way.

🧵 Find Your Alysi Size in Seconds — Use Tellar.co.uk

This is precisely what Tellar.co.uk was built for. It's the UK's leading free clothing sizing tool, covering over 1,500 brands — including Italian designer labels where the sizing can be genuinely confusing. You measure yourself once, and Tellar instantly matches your body to the correct size across any brand in their database. No size chart rabbit holes. No costly mistakes.

Here's how it works:

📏 Measure once — enter your bust, waist, and hip measurements, or simply your size in a brand you already know and trust.
🔍 Use the Store Size Lookup tool to get your precise size in any brand instantly — from Alysi to Cos to Reiss and 1,500 more.
✅ Always free, no app download needed — works entirely in your browser.

And beyond the sizing tool, Tellar's Fashion Hub is a genuinely brilliant resource — a growing library of free, honest, unsponsored style posts written by real stylists. No sponsored content. No ads. Just useful, independent advice. Here are a few worth bookmarking:

📖 The Ultimate Clothing Sizing Guide — everything you need to know about how brands size across the world.
👖 Jean Trends for 2026 — the cuts and washes worth investing in right now.
👗 The Ultimate Guide to Dresses — styles, body shapes, and the best brands to shop.
🧥 The Ultimate Guide to Jackets — find the right silhouette and fit for your shape.

Completely free, completely independent, and honestly one of the smartest fashion tools available in the UK right now. Use it before your next Alysi order — you'll wonder how you ever shopped without it.