MUJI to GU clothing size
The short answer
MUJI L is GU L by the two brands' own charts. 0 of 6 MUJI sizes land on a different label at GU.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| MUJI Japan sizing | MUJI builds it for | GU Japan sizing, by chart | Same label | GU builds it for | GU also prints |
|---|---|---|---|---|---|
| XS | bust 28.7 to 30.3 in, waist 22.1 to 23.6 in, hip 31.9 to 33.5 in | XS | XS | bust 27.6 to 29.5 in, waist 21.3 to 23.2 in, hip 30.3 to 31.9 in | not published |
| S | bust 29.5 to 31.9 in, waist 22.8 to 25.2 in, hip 32.7 to 35 in | S | S | bust 29.5 to 31.5 in, waist 23.2 to 24.8 in, hip 31.9 to 33.5 in | not published |
| M | bust 31.5 to 33.9 in, waist 24.8 to 27.2 in, hip 34.7 to 37 in | M | M | bust 31.5 to 33.5 in, waist 24.8 to 26.4 in, hip 33.5 to 35 in | not published |
| L | bust 33.5 to 35.8 in, waist 26.8 to 29.1 in, hip 36.6 to 39 in | L | L | bust 33.5 to 35.4 in, waist 26.4 to 28 in, hip 35 to 36.6 in | not published |
| XL | bust 35.4 to 37.8 in, waist 28.7 to 31.1 in, hip 38.6 to 40.9 in | XL | XL | bust 35.4 to 37.8 in, waist 28 to 30.3 in, hip 36.6 to 38.6 in | not published |
| XXL | bust 37.4 to 39.8 in, waist 30.7 to 33.1 in, hip 40.6 to 42.9 in | XXL | XXL | bust 37.8 to 40.2 in, waist 30.3 to 32.7 in, hip 38.6 to 40.6 in | not published |
What wearers say
Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.
Sources
- MUJI Japan sizing size guide, read on 2026-09-25.
- GU Japan sizing size guide, read on 2026-09-25.