Shein Size System Explained 2026 — How to Find Your Size

Shein runs very small — up to 2 sizes smaller than EU. Complete guide to Shein's size system, how to read product size charts, and conversion tables for women: EU, UK and US.

Shein's size labels look familiar — XS, S, M, L — but they follow Asian sizing standards, which run 1 to 2 sizes smaller than EU. The trickier problem is that Shein's sizing isn't even consistent across products: different suppliers, different measurements. This guide shows you how to navigate that and always order the right size.

  1. 01

    Shein runs very small

    Shein uses Asian sizing, which runs 1-2 sizes smaller than EU. If you wear EU 40 (M) in European brands, order XL or XXL in Shein. The exact difference varies by product and supplier.

  2. 02

    Read the product size chart, not the label

    Each Shein product has its own size guide with garment measurements in cm. Click 'Size Guide' below the size selector. Compare the garment measurements (not body measurements) to your own body, adding 2-4 cm for ease.

  3. 03

    Shein size conversion table

    Shein XS ≈ EU 32-34. S ≈ EU 34-36. M ≈ EU 36-38. L ≈ EU 38-40. XL ≈ EU 40-42. XXL ≈ EU 42-44. 3XL ≈ EU 44-46. These are approximations — always verify with the product chart.

  4. 04

    Read buyer reviews

    Shein reviews include the reviewer's usual size and the size ordered. Filter reviews by your size range for the most relevant fit feedback. This is more reliable than any conversion table.

Use the size converter