What Is Sizing Like at Accessorize?

By Ella Blake — Fashion Stylist | Tellar Fashion Hub — Always honest, unbiased & unsponsored

Accessorize sizing runs true to standard UK sizes across most of its clothing and swimwear lines, though the fit can vary noticeably between product categories — so it genuinely pays to know what you're buying before you commit.

I've always had a soft spot for Accessorize. It's one of those shops you pop into for a hair clip and emerge from twenty minutes later clutching a beach bag, a rash vest, and a pair of earrings that were absolutely not on the list. But over the years, I've also had my fair share of sizing surprises — a swimsuit that gaped at the chest despite being "my size," and a midi skirt that fit perfectly off the rail without any fuss at all. So let me save you the changing room guesswork.

How Accessorize Sizing Generally Works

Accessorize — part of the Monsoon Accessorize group — uses standard UK sizing for its clothing and swimwear ranges. The brand tends to produce relaxed, holiday-influenced pieces, and the cuts generally reflect that: slightly loose through the body, not designed to be structured or tailored.

As a rule of thumb:

Clothing sits true to size, occasionally running a half-size generous
Swimwear can run slightly small — particularly in the bust
Knitwear and jersey pieces tend to be oversized by design, so check the product description before sizing down
Accessories (bags, scarves, jewellery) are one-size, but ring sizing follows standard UK measurements

Size Conversion Guide

Accessorize sells in UK sizes and typically runs from a UK 6 to a UK 22 depending on the range. These are general guidelines. Always check the individual product's size guide on the Accessorize website, particularly for swimwear.

Swimwear — Size Up If in Doubt

Honestly, this is where I'd urge the most caution. Accessorize swimwear is gorgeous — the prints are brilliant, the prices are fair — but the sizing can be unforgiving if you're fuller in the bust. I've consistently found that the cups run a touch small, particularly in bandeau and triangle styles. If you're between sizes, go up. If you're a D cup or above, look specifically for their underwired or adjustable-strap options, which offer significantly better support and a more reliable fit.

One-piece swimsuits tend to fit more generously through the torso than the bikini tops do, so if swimwear is your main purchase, the one-pieces are a safer bet at your usual size.

Dresses and Skirts — Usually a Reliable Fit

This is where Accessorize genuinely delivers. Their dresses and midi skirts — especially the embroidered and tiered styles that come out every spring — tend to be cut with a relaxed ease that works well across body shapes. The fabrics are usually lightweight cotton or viscose blends with a bit of give, so there's less chance of a rigid fit issue. I'd say these run true to size, and if anything, the longer hemlines are cut with enough swing to be flattering rather than clingy.

If you're petite (under 5'4"), be aware that their midi lengths can land closer to maxi territory. Worth checking before you buy, or factor in a hem alteration — always worth it for a piece you love.

Knitwear, Tops and Cover-Ups

Accessorize's knitwear is very much in the cosy-oversized camp. This is intentional — most of their jumpers and cardigans are designed to be worn loosely. Don't be tempted to size down thinking it'll create a neater silhouette; the proportions are made to be generous. Wear them as intended and they look brilliant layered over a swimsuit or with wide-leg trousers.

Their cotton tops and cover-ups tend to be more fitted, and these are where I'd say the sizing is most consistently true to UK standard. A size 12 will fit like a size 12. No drama.

Where Else to Shop — Honest Brand Recommendations

If Accessorize doesn't have what you're after, or you want to explore similar aesthetic territory with perhaps more sizing consistency, here are my honest picks:

High Street

Monsoon — the sister brand, and arguably the better bet for occasion dressing and more structured pieces. The sizing mirrors Accessorize exactly, and the quality often feels a step up.
Anthropologie — gorgeous prints, a boho-adjacent aesthetic, and a very wide size range. Sizing can run slightly more relaxed than UK standard, so check their specific guide.
Oliver Bonas — brilliant for jewellery and accessories with a more refined, independent-boutique feel. Their clothing is also true to size and thoughtfully cut.
White Stuff — reliable, flattering cuts in beautiful prints. Great for dresses and knitwear if you want something that fits properly without fuss.
Fat Face — excellent for casual beachwear and cover-ups. Their sizing is consistent and generous enough to be flattering without being shapeless.
Boden — a perennial favourite for print-led dresses and swimwear. Their sizing is precise and well-documented, which takes the guesswork out entirely.
Phase Eight — steps things up for more polished occasion looks. True to size, excellent quality, and a range that extends to a UK 22 reliably.
River Island — great for trend-led accessories and jewellery at accessible prices. A solid everyday alternative to Accessorize for statement earrings and bags.

Premium

Reiss — if you want accessories and occasionwear that feel noticeably more elevated in fabric and finish. Sizing is precise and runs true.
Ted Baker — known for beautiful embellishment and print work. Their sizing traditionally runs small, so always check their guide or consider sizing up.

Luxury / Designer

Missoni — if you want to invest in the ultimate print-led resort dressing. The sizing is typically Italian (runs small), so always refer to measurements rather than the number on the label.

Independent Picks

Tatty Devine — a wonderfully creative London-based accessories brand making bold, playful jewellery and hair accessories. Totally one-of-a-kind, brilliant quality, and far more interesting than the high street. If you love Accessorize's fun side, you'll adore Tatty Devine.
Baukjen — a London-based sustainable womenswear brand with a really transparent and consistent size guide. Their dresses and summer pieces are beautifully made and fit true to size across a solid range. Worth bookmarking.

The Bottom Line on Accessorize Sizing

Go true to size for dresses, skirts, and tops. Size up for swimwear, especially if you're fuller in the bust. Don't overthink the knitwear — it's meant to be roomy. And if you're ever torn between a holiday bikini or a dress from Accessorize, the dress will almost certainly be the better-fitting bet.

The accessories themselves — bags, jewellery, scarves — are joyful, well-priced, and a genuinely reliable place to spend your money. No sizing anxiety required.

Never Guess Your Size Again — Use Tellar

Trying to work out your size across 1,500+ brands is exhausting. That's exactly why Tellar.co.uk exists — it's the UK's leading free sizing tool, and it does the hard work for you.

Measure once — bust, waist, hips, or just enter your size in a brand you already know
Use the Store Size Lookup tool to get your precise size in any brand instantly — from Accessorize to Arket, COS to Reiss and beyond
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