Diane von Furstenberg to GU clothing size
The short answer
Diane von Furstenberg XXS is GU S by the two brands' own charts. 6 of 6 Diane von Furstenberg 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.
On 4 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Diane von Furstenberg | Diane von Furstenberg builds it for | GU Japan sizing, by chart | Same label | GU builds it for | GU also prints |
|---|---|---|---|---|---|
| XXS | bust 31 in, waist 24 in, hip 34 in | S | not published | bust 29.5 to 31.5 in, waist 23.2 to 24.8 in, hip 31.9 to 33.5 in | not published |
| XS | bust 32 in, waist 25 in, hip 35 in | M | XS | bust 31.5 to 33.5 in, waist 24.8 to 26.4 in, hip 33.5 to 35 in | not published |
| S | bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in | L | S | bust 33.5 to 35.4 in, waist 26.4 to 28 in, hip 35 to 36.6 in | not published |
| M | bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in | XL | M | bust 35.4 to 37.8 in, waist 28 to 30.3 in, hip 36.6 to 38.6 in | not published |
| L | bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in | XL | L | bust 35.4 to 37.8 in, waist 28 to 30.3 in, hip 36.6 to 38.6 in | not published |
| XL | bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in | 3XL | XL | bust 40.2 to 43.3 in, waist 32.7 to 35.4 in, hip 40.6 to 43.3 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
- Diane von Furstenberg size guide, read on 2026-09-18.
- GU Japan sizing size guide, read on 2026-09-25.