How to Find Your Perfect Fit at Abercrombie & Fitch

BRAND SIZING GUIDE · FASHION HUB

By Ella Blake | Tellar Fashion Hub

Finding your size at Abercrombie & Fitch is genuinely simple once you know their sizing logic — and once you do, you'll understand why this brand has quietly become one of the best high street buys for flattering, well-cut denim and relaxed-luxe basics in the UK.

I'll be honest — I used to completely overlook Abercrombie & Fitch. In my head it was still the brand blasting cologne at teenagers in 2007. Then a friend turned up to Sunday lunch in the most impossibly well-fitting straight-leg jeans I'd ever seen, and when I asked where they were from, I nearly fell off my chair. A&F. Completely re-evaluated. I bought three pairs within the month and I've never looked back.

The brand has gone through an enormous reinvention and is now genuinely one of the best destinations for curve-flattering denim, well-constructed knitwear, and elevated basics — but their sizing can trip you up if you go in blind. Let me walk you through everything you need to know.

How Does Abercrombie & Fitch Sizing Actually Work?

A&F uses US sizing as its base, which means everything runs slightly different to what we're used to in the UK. Here's the key thing to know upfront: Abercrombie & Fitch tends to run small, particularly across the bust and shoulders. If you're usually a UK 12, you'll likely need a US Medium or even a Large in some of their tops and blouses.

Their size labels typically translate as follows:

A&F US SizeApproximate UK SizeEU EquivalentXSUK 6–834–36SUK 8–1036–38MUK 10–1238–40LUK 12–1440–42XLUK 14–1642–44XXLUK 16–1844–46

But here's the thing — this is a generalisation, and A&F's sizing actually varies quite a bit between product categories. Their denim is a whole different conversation, and honestly, it's where their sizing system gets really interesting.

The Denim — Where A&F Really Shines (and Where Sizing Gets Specific)

A&F's jeans are the real standout. They've built a genuinely impressive range that caters to different body shapes and inseam lengths — something a lot of high street brands still get completely wrong. Their "Curve Love" range is worth special mention: it's designed with a higher hip-to-waist ratio, meaning if you've always found standard jeans gape at the back waistband, these might genuinely change your life. I'm not exaggerating.

Ankle jeans — cut for a 28" inseam; perfect if you're 5'3" and under, no more bunching at the ankle
Regular jeans — 30" inseam, the most versatile length for most heights
Long jeans — 32" inseam, brilliant if you're taller and usually find high street lengths too short
Extra Long — 34" inseam, genuinely one of the few brands offering this at high street price points

For denim specifically, order by your usual waist measurement in inches. If you're a UK size 12 with a 30" waist, order a 30. Simple. The Curve Love range runs the same waist measurements but with a more generous seat and hip — just select it as a filter on site.

STYLIST TIP

Always check the inseam length before you order A&F jeans online. I once ordered what I thought was a regular pair and ended up with ankle jeans — which, for the record, were brilliant on me, but it gave me a momentary panic when they arrived. Know your inseam before you click buy.

Tops, Shirts & Knitwear — Go Up a Size

As a general rule for anything going across your shoulders and bust, size up at least one from your usual UK size. A&F's tops are cut with a fairly narrow shoulder seam — which looks incredibly sleek when it fits, but if you're between sizes, always err larger. You can always belt a slightly bigger shirt; you cannot unbuy a top with a shoulder seam straining across your back.

Their cotton shirts and blouses: size up one
Oversized hoodies and sweatshirts: can stay true to your usual UK size (they're intentionally roomy)
Knitwear and jumpers: these can vary — check the model's measurements listed on site, they're usually quite helpful
Fitted jersey tops and bodysuits: go true to size or up one if you're fuller in the bust

How Do They Compare to Other Brands?

If you're used to shopping at Mango or Banana Republic, you'll find A&F sits in a very similar sizing territory — perhaps just slightly more generous in the hips than Mango's European-leaning cut. Hollister, which is A&F's sister brand, runs even smaller and more junior in fit, so don't use your Hollister size as a guide.

Compared to Levi's, A&F denim is cut slightly narrower through the thigh in the straight-leg styles. If you love the relaxed fit of a Levi's 501, you'll want to go up an inch on the waist at A&F to get a comparable ease through the leg. Paige denim shares a similar premium stretch content and flattering cut, though at a higher price point — A&F really does sit in a sweet spot for quality-to-price ratio that I think is genuinely underappreciated.

If you love the polished-casual aesthetic of Crew Clothing or the clean lines of Tommy Hilfiger, A&F's updated collections will feel very familiar and is often significantly better value. Reiss shoppers who want to spend a bit less on holiday basics and weekend knitwear should absolutely be looking here. And for anyone who's loyal to All Saints for that slightly edgier, darker-palette vibe — A&F's recent collections have leaned into a very similar aesthetic, especially in their leather-look jackets and dark denim edits.

Two Under-the-Radar Brands Worth Knowing

While we're on the topic of well-cut denim and elevated basics — two brands I'd always recommend alongside A&F if you're building a capsule wardrobe:

Nudie Jeans — Swedish denim brand with brilliant ethical credentials and a fantastic repair programme. Their sizing is very consistent and the quality is exceptional. A brilliant alternative for denim purists.
Sézane — French brand, cult following for good reason. Their tops, shirts and knitwear sit beautifully and fill the gap between high street and designer. Runs slightly small so size up one, much like A&F.

Quick Fit Checklist Before You Order

Measure your waist, hips and bust before ordering — don't rely on your usual UK size alone
Check the inseam length for jeans — Ankle, Regular, Long or Extra Long
If you're fuller in the hips or thighs, go straight for the Curve Love range
For tops and shirts: size up one from your usual UK size
For oversized styles (hoodies, sweatshirts): stay true to size
Always check the model's height and measurements on product pages — A&F includes this info and it's genuinely useful

Stop Guessing Your Size — Use Tellar Instead

If navigating brand sizing conversions gives you a headache, I completely understand — it's exactly why Tellar.co.uk exists. It's the UK's leading free sizing tool, and it's genuinely the most useful thing I've found for shopping online without the returns faff.

Measure once — just your bust, waist, and hips (or use an existing brand size you trust). Takes two minutes.

Use the Store Size Lookup — get your precise recommended size at Abercrombie & Fitch, or any of 1,500+ other brands, instantly. No spreadsheets. No guesswork.

Completely free — no app downloads, no subscription, no ads. Just accurate, honest sizing information whenever you need it.

Tellar also has a brilliant Fashion Hub — a library of free, unsponsored style articles written by real stylists. Honest. Independent. Always free. Whether you're hunting down the best jeans for your body shape or trying to navigate brand sizing, it's all there.

Tellar Home Store Size Lookup Ultimate Sizing Guide Best Jean Trends 2026

Find My A&F Size Now →

The Bottom Line

Abercrombie & Fitch is genuinely one of the most underrated high street buys right now — but only if you understand the sizing. Size up for tops, use your waist measurement in inches for denim, pick the right inseam length, and consider the Curve Love range if you're fuller through the hips. Do that, and you'll wonder how you ever wrote them off as a teenage brand.

And if you want to shortcut the whole process, just pop your measurements into Tellar's Store Size Lookup and get your A&F size in about thirty seconds. Job done.

Written by Ella Blake for the Tellar Fashion Hub. All brand recommendations are independent and unsponsored.