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Choosing your size online without getting it wrong

Wrong-size returns are half of all fashion returns. Three measurements are enough to avoid them.

YR Yanis Roux 26 July 2026 5 min read 2 466

Sizes are standardised nowhere. A 40 at a Portuguese brand is not a 40 at an Italian one. The only reliable data is the measurement table in centimetres.

Measure a garment, not your body

Take a garment that fits you well, lay it flat, and measure three things: chest width seam to seam, total length, sleeve length. Compare those three numbers to the table on the page. It beats measuring your chest.

Read the material before the size

  • Untreated linen and cotton shrink 2 to 3 % on the first hot wash.
  • Jersey and knit widen with wear.
  • Leather moulds to the body but does not lengthen.

Warnings worth checking

“Runs small”, “size up”: these notes usually come from reviews, not the brand. Check that several recent comments confirm them.

When the shop offers an exchange

A free size exchange beats a refunded return: you keep the product and the shop avoids a dead return. Many sellers offer one per order without advertising it — you just have to ask through messaging.

Tags Guide Fashion

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