Whistles to Farm Rio clothing size
The short answer
Whistles 12 is Farm Rio M 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.
| Whistles | Whistles builds it for | Farm Rio, by chart | Same label | Farm Rio builds it for | Farm Rio also prints |
|---|---|---|---|---|---|
| 04 | bust 30 in, waist 23.5 in, hip 34.5 in | XXS | not published | bust 30 to 31 in, waist 24 to 25 in, hip 33 to 34 in | US 00 · UK 2 · EU (as printed) 30 |
| 06 | bust 31 in, waist 24.5 in, hip 35.5 in | XXS | not published | bust 30 to 31 in, waist 24 to 25 in, hip 33 to 34 in | US 00 · UK 2 · EU (as printed) 30 |
| 08 | bust 32 in, waist 25.5 in, hip 36.5 in | XS | not published | bust 32 to 33 in, waist 26 to 27 in, hip 35 to 36 in | US 0-2 · UK 4-6 · EU (as printed) 32-34 |
| 10 | bust 34 in, waist 27.5 in, hip 38.5 in | S | not published | bust 34 to 35 in, waist 28 to 29 in, hip 37 to 38 in | US 4-6 · UK 8-10 · EU (as printed) 36-38 |
| 12 | bust 36 in, waist 29.5 in, hip 40.5 in | M | not published | bust 36 to 37 in, waist 30 to 31 in, hip 39 to 40 in | US 8-10 · UK 12-14 · EU (as printed) 40-42 |
| 14 | bust 38 in, waist 31.5 in, hip 42.5 in | L | not published | bust 38 to 40 in, waist 32 to 34 in, hip 41 to 43 in | US 12-14 · UK 16-18 · EU (as printed) 44-46 |
| 16 | bust 40 in, waist 33.5 in, hip 44.5 in | L | not published | bust 38 to 40 in, waist 32 to 34 in, hip 41 to 43 in | US 12-14 · UK 16-18 · EU (as printed) 44-46 |
| 18 | bust 42.5 in, waist 35.5 in, hip 46.5 in | XL | not published | bust 41 to 44 in, waist 35 to 37 in, hip 44 to 46 in | US 16 · UK 20 · EU (as printed) 48 |
| 20 | bust 45 in, waist 38 in, hip 49 in | XL | not published | bust 41 to 44 in, waist 35 to 37 in, hip 44 to 46 in | US 16 · UK 20 · EU (as printed) 48 |
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
- Whistles size guide, read on 2026-09-18.
- Farm Rio size guide, read on 2026-09-18.