Size Guide
Shein Size Chart & Fit Guide: Does Shein Run Small?
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Quick verdict
Shein tends to run small — and, more importantly, inconsistently. Its Asian-influenced size blocks commonly measure a size below US equivalents, but because items come from many different suppliers, no single rule holds across the catalog. The universal advice: check the garment measurements and reviews on every individual listing before you order.
How Shein fits by category
Tops
Shein tops are drafted on Asian-influenced size blocks that tend to sit narrower in the shoulders and bust than US mall sizing, and shorter through the torso. Because the catalog is stocked by hundreds of different suppliers, two tops in the same labeled size can fit completely differently. The listing's own garment measurements and photo reviews are a far better guide than the size letter on the tag.
Bottoms & dresses
Jeans, trousers, and fitted dresses are where the small-running reputation bites hardest: hips and waists commonly measure tighter than the equivalent US size, and rise lengths vary wildly between listings. Bodycon and woven (non-stretch) styles leave no room for error, so many shoppers compare the item's listed measurements against a piece they already own before choosing.
Plus & curve
Shein Curve runs on its own grading, and shoppers commonly report it fits closer to expectations than sizing up in the main range: the proportions are drafted for curvier bodies rather than just scaled up. Even so, consistency varies listing to listing, so the same rule applies: read the measurements table and recent reviews for the exact item, not the brand as a whole.
Size conversion charts
The tables below are standard international conversions, not Shein-specific garment measurements. Cuts and fabrics vary between styles, so check Shein's official size chart for exact garment measurements before you order.
Women's clothing: standard international conversion
Standard conversions; individual brands vary by cut and fabric.
| Alpha | US | UK | EU |
|---|---|---|---|
| XS | 0–2 | 4–6 | 32–34 |
| S | 4–6 | 8–10 | 36–38 |
| M | 8–10 | 12–14 | 40–42 |
| L | 12–14 | 16–18 | 44–46 |
| XL | 16–18 | 20–22 | 48–50 |
| XXL | 20–22 | 24–26 | 52–54 |
Men's tops: standard international conversion
US and UK men's sizes use the same chest-inch base; EU adds roughly 10.
| Alpha | Chest (US/UK, in) | EU |
|---|---|---|
| XS | 32–34 | 42–44 |
| S | 34–36 | 44–46 |
| M | 38–40 | 48–50 |
| L | 42–44 | 52–54 |
| XL | 46–48 | 56–58 |
| XXL | 50–52 | 60–62 |
How to choose your size at Shein
- Measure a garment, not your body: lay a favorite similar piece flat and match its numbers to the listing's size table; it beats any conversion chart.
- Read recent reviews first: reviewer photos and "runs small/true/large" notes on the specific item are the closest thing Shein has to a reliable size guide.
- Give fitted styles extra room: bodycon and non-stretch woven pieces are the most commonly reported tight fits, so consider a size up there even when knits fit true.
- Shop Curve in Curve sizes: the plus range is graded for curvier proportions, and shoppers tend to find it more predictable than sizing up in the main line.
Shein sizing FAQ
Should I order a size up on Shein?
Often, but not always, and that's the catch. Shein tends to run about a size small versus US sizing, yet items vary so much between suppliers that a blanket rule fails. The reliable method is to open each listing's size chart, compare the garment measurements to your own, and skim reviews for that specific item before deciding.
Does Shein run small?
Generally yes. Shein sizes are built on Asian-influenced blocks that tend to measure smaller than the same US letter or number size, particularly in the bust, hips, and sleeve length. Many US and European shoppers find they need one size up from their usual, sometimes two in fitted styles.
Why is Shein sizing so inconsistent?
Shein aggregates thousands of items from many different manufacturers, and each supplier drafts its own patterns. There's no single house fit block the way a traditional brand has, so a medium from one listing and a medium from another can differ noticeably. That's why per-item measurements matter more here than anywhere else.
How do I use Shein garment measurements?
Each product page lists the actual garment's measurements by size. Lay a similar item you love flat, measure it, and match those numbers to the listing. This is far more reliable than converting your body measurements. Pay special attention to bust and hip on fitted pieces and to total length on dresses.
Is Shein Curve true to size?
Shoppers commonly report Shein Curve fits more predictably than the core range because it's graded for curvier proportions rather than scaled up from straight sizes. It still inherits Shein's supplier-to-supplier variation, though, so check the measurements table and reviews on every Curve listing too.
Keep reading
- ASOS size chart & fit guide
- Mango size chart & fit guide
- How to shop online when you fall between sizes
- International size conversion charts
- How to measure yourself at home
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