How to Find Your Perfect Fit at Add Clothing

By Ella Blake | Tellar Fashion Hub

Add Clothing gets sizing right in a way that a lot of brands still don't — but knowing how to navigate their size range makes the difference between a dress that skims perfectly and one that ends up back in its bag. If you've landed here wondering whether to size up, whether their cuts run generous or mean, or simply how to shop Add Clothing with confidence, you're in exactly the right place.

"Add Clothing is one of the few UK brands that genuinely seems to design for real curves — but like any brand, it has its quirks."

Who Is Add Clothing?

Add Clothing is a UK-based plus-size fashion brand covering sizes 16 through to 32, and they've built a solid reputation for bringing genuine on-trend pieces to the curve market — rather than the oversized, shapeless styles that used to be the only option. Think wrap dresses, tailored blazers, fitted midi skirts and bold prints. It's proper fashion, not an afterthought.

I first stumbled across Add Clothing when I was styling a client who was a size 22 and struggling to find a wrap dress that didn't gape at the bust or swamp the waist. Add Clothing was the answer. But — and here's the thing — we still had to try a couple of sizes before landing on the right one, because their sizing can vary noticeably across different product lines.

How Does Add Clothing Sizing Actually Run?

This is the bit most people want to know, and honestly, the answer is: it depends on the style. Here's what I've noticed across their ranges:

Dresses and tops — generally true to size, sometimes slightly generous around the waist. If you're between sizes, go down.
Trousers and jeans — these tend to come up on the smaller side, particularly around the hip and thigh. Going up one size here is often the safer call.
Knitwear and jersey pieces — typically very forgiving and stretchy; size down if you prefer a more fitted look.
Structured pieces like blazers and coats — size up if you're broad across the shoulders or prefer layering underneath.
Occasionwear — their bodycon and lace styles are cut quite closely, so measure yourself properly before ordering.

How to Measure Yourself Before You Buy

I cannot stress this enough: always measure before you buy from any plus-size brand, and Add Clothing is no exception. The good news is that their size chart is fairly detailed — but you need to know your actual measurements to use it properly.

Bust: Measure at the fullest part, keeping the tape parallel to the floor.
Waist: Measure at the narrowest point — usually just above the navel.
Hips: Measure at the widest point, typically about 8 inches below the waist.
Inside leg: Only relevant for trousers, but worth doing if you're petite or tall within the plus-size range.

Add Clothing does offer petite and tall fits in some ranges, which is genuinely brilliant — and something that M&S and Next have also started doing well. Don't skip the length options; getting the proportions right transforms how a piece sits on your frame.

Tips for Different Body Shapes

Add Clothing caters to a wide range of body shapes within the plus-size category, and their styles work differently depending on your silhouette.

Hourglass: You'll find wrap styles and belted pieces work beautifully — Add Clothing does these really well. Lean into it.
Apple shape: Look for their empire-line dresses and A-line skirts, which skim the midsection without clinging. Their floaty blouses are a win too.
Pear shape: Their wide-leg trousers are excellent for balancing a fuller hip. Pair with a bold-print top to draw the eye upward.
Fuller bust: Their V-neck and wrap tops are genuinely well-cut for bigger busts. Avoid the stiffer structured bodices unless you're sizing up.

Add Clothing vs. Other Plus-Size Brands: How Does It Compare?

I'll be honest — the plus-size market has come a long way, but quality and sizing consistency still varies wildly between brands. Here's how Add Clothing stacks up against the alternatives I recommend most:

ASOS Curve — brilliant range and fast turnover of trends, but sizing is notoriously inconsistent. Always check reviews per item.
New Look Curves — great value for basics and occasionwear. Runs slightly smaller than Add Clothing across most categories.
River Island Plus — strong on denim and casualwear. Their jeans in particular are excellent for curvy figures.
Phase Eight — more premium price point, beautiful occasionwear and workwear. Tends to come up small; size up one.
Monsoon — wonderful for dresses and occasionwear. Generous cut; if you're between sizes, go down.
Boden — they've quietly expanded their plus range and the quality is genuinely excellent. Sizing is consistent and reliable.
White Stuff — relaxed, natural fabrics. Their plus range is limited but what they do offer runs true to size with a relaxed fit.

For something a bit more independent and outside the high street, two brands I've been recommending lately are Poetic Justice — a cult US-based denim brand beloved for its ultra-flattering stretch jeans for curvy figures, now available to UK shoppers — and Navabi, a European plus-size platform curating designer-quality pieces from sizes 12 to 34. Both are worth bookmarking.

My Honest Add Clothing Shopping Fails (and Wins)

No fashion guide is complete without the failures. I ordered a structured blazer from Add Clothing in my usual size and it was genuinely unwearable across the back — a clear lesson in sizing up for anything with a fitted, tailored shoulder. The return was easy enough, but I'd have saved myself the faff by measuring first.

The wins? Their ruched midi dresses are consistently brilliant. I've recommended them to three different clients and every single one has reordered. The fabric has enough stretch to accommodate different proportions, and the ruching is forgiving in the best possible way.

Never Guess Your Size Again — Use Tellar

If you're tired of the guessing game across Add Clothing and every other brand you shop, Tellar.co.uk is genuinely the tool I wish had existed years ago. It's the UK's leading free clothing sizing platform — you measure once, and it instantly matches your body to the right size across 1,500+ brands. No downloads, no subscriptions, no faff. Just your measurements and your perfect size, every time.

Here's how it works:

Measure once — your bust, waist, hips, or simply input an existing brand size you know fits.
Use the Store Size Lookup tool — get your precise recommended size for Add Clothing, M&S, Phase Eight, ASOS, Monsoon and 1,500+ more brands, instantly.
Always free — works in-browser, no account needed.

For more guidance on sizing across all your favourite brands, don't miss the Tellar Fashion Hub — a library of honest, unbiased, independent style advice from real stylists. Here are a few posts worth reading:

Tellar is completely ad-free and sponsor-free — every recommendation is independent. It's the kind of tool that actually saves you money, because when you buy in the right size first time, you stop returning things.