Diane von Furstenberg to Whistles clothing size
The short answer
Diane von Furstenberg M is Whistles 12 by the two brands' own charts.
Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.
| Diane von Furstenberg | Diane von Furstenberg builds it for | Whistles, by chart | Same label | Whistles builds it for | Whistles also prints |
|---|---|---|---|---|---|
| XXS | bust 31 in, waist 24 in, hip 34 in | 06 | not published | bust 31 in, waist 24.5 in, hip 35.5 in | not published |
| XS | bust 32 in, waist 25 in, hip 35 in | 08 | not published | bust 32 in, waist 25.5 in, hip 36.5 in | not published |
| S | bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in | 10 | not published | bust 34 in, waist 27.5 in, hip 38.5 in | not published |
| M | bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in | 12 | not published | bust 36 in, waist 29.5 in, hip 40.5 in | not published |
| L | bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in | 14 | not published | bust 38 in, waist 31.5 in, hip 42.5 in | not published |
| XL | bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in | 16 or 18 | not published | bust 40 in, waist 33.5 in, hip 44.5 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.
- Whistles size guide, read on 2026-09-18.