Is AliExpress true to size? Not reliably, and not in a way you can predict from the label. A lot of the clothing is cut to Chinese sizing, which commonly runs smaller than the same letter in the US or UK, and there is no sizing standard across the site: every seller writes its own chart. So the "L" you always buy at home tells you almost nothing. What does work is a three-part check, and most guides stop after the second part. Measure yourself, compare against this seller's chart, then read the buyer photos and fit comments as evidence before you pay.
Why AliExpress sizes don't match what you wear at home
Two things stack up. First, Chinese sizing is built around Chinese body-measurement averages, so an M cut for that market is usually smaller than an M from a Western brand. Sizing guides that track this report the gap as bigger on some categories than others.
Second, AliExpress itself doesn't set sizes. We couldn't find an official AliExpress help page on sizing, and the third-party guides all describe the same observed behaviour: each store publishes its own chart, so the same "L" can mean different measurements from one store to the next. A universal S/M/L-to-centimetre conversion table is close to useless here. The only chart that matters is the one on the listing in front of you.
So does AliExpress clothing run small? Usually, yes. But "size up one" is a habit, not a method, and it fails as soon as a seller cuts generously.
Step 1: measure yourself in centimetres
Use a flexible tape and write the numbers down once, so you can reuse them. The measurements that come up in almost every seller chart are:
- shoulder width
- bust or chest
- waist
- hips
- sleeve length for tops, inseam for trousers
Centimetres, not inches. That's what you'll be comparing against in the seller's chart, and converting on the fly only adds errors.
Step 2: read this seller's chart, not a conversion table
Open the size chart on the listing itself and match your numbers against its columns. Ignore the letter entirely until the numbers agree. If your chest measurement falls between two sizes, the chart has done its job: it's told you that the fit is a judgment call, and that's exactly where the reviews come in.
One nuance charts rarely mention: fabric. Stretch fabrics with a lot of spandex, leggings being the obvious case, have far more give than a woven shirt, so a size that looks tight on paper can still be wearable. A non-stretch jacket gives you nothing. Check the material line in the listing before you decide how much margin you need.
Shoes: go by foot length
Shoes tend to follow EU sizing more consistently than clothing does, but the printed number still isn't the thing to trust. Measure your foot length in centimetres and find that length in the seller's chart. If the chart lists only size numbers and no lengths, that's a reason to lean harder on the reviews, or to pick another listing.
Step 3: read buyer photos and fit comments like evidence
Most size guides give this step one line ("check the reviews") and stop there. Here it is as a process.
- Get to the photo reviews. Scroll, load more reviews, and pick out the ones with images. A photo of the garment on a real person shows how it sits at the shoulders, where the hem falls and whether it pulls across the chest. No chart shows that.
- Weight recent reviews more. They describe what the seller is sending now, not what they sent a year ago. If the review list lets you sort by date, use it.
- Scan the text for fit language. You're looking for sentences like "I ordered XL and it fits perfectly", "runs small, size up", "sleeves are short". The best reviews give the reviewer's own height, weight or measurements. One of those is worth ten reviews that say "good quality".
- Look for agreement, not a single verdict. One or two "true to size" comments from people whose build you don't know are weak evidence. Several reviews pointing the same way, ideally with measurements attached, are strong evidence. It also helps to know which reviews to discount in the first place; our guide to spotting fake reviews on AliExpress covers that.
- Make the call against the chart. If the reviews say the item runs small, pick the size whose chart measurements clear yours with some room, rather than jumping a letter out of habit.
The limit nobody mentions: their "true to size" isn't yours
A reviewer who says "true to size" is describing their body in that garment. If they're shorter, broader or slimmer than you, the verdict may not transfer. That's why comments with measurements matter so much more than comments without them, and why the chart stays in the loop. Reading reviews this way cuts the risk of a bad fit; it doesn't remove it.
When a listing has too few reviews to judge fit
A listing with a handful of reviews has a handful of fit reports, and possibly no photos at all. That's not a sizing problem you can solve by reading harder. Your options are to rely on the chart alone and accept the risk, or to find a similar item from a listing with a deeper review history. For anything where fit really matters, a coat or a pair of shoes you'll wear daily, we'd take the second option.
If it still arrives the wrong size
It happens even when you do everything right. Measure the item flat with a tape, photograph the tape against it, and compare with the listing's chart. Screenshot the listing's chart before the seller can edit it. Then open a dispute from the order page with a reason such as wrong size or not as described, and attach the photos. The full process, and the mistakes that lose disputes, are in our AliExpress Buyer Protection guide. Don't confirm receipt first: that ends your protection.
Knowing if there's photo evidence before you dig
Step 3 only works if the listing has photo reviews to read, and you find that out by scrolling. AliScore gives you a head start. When a listing has photo reviews, its panel on the product page puts an "N with photos" figure beside the review count, so you can see how much photo evidence there is before you start digging.
The score covers the thin-listing problem too: fewer than 10 reviews pulls it down, because a few reviews prove little, about fit or anything else. The details are on how it works. AliScore doesn't read sizes, open the photos for you or predict your fit. The tape measure and the reading are still your job.
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