Our dress shirts are sized by collar, from 38 to 46. Find your collar size, then read across for the chest and waist.
We offer three fits. The collar, sleeve, and length are identical across all three — only the body width changes.
Slim Fit
Sleek and tailored, cut closer to the body for a modern silhouette. Runs trimmer than our Classic Fit.
| Ploumanac’h | US / UK | Chest | Waist |
|---|---|---|---|
| 38 | 15 | 50 cm19.7″ | 46 cm18.1″ |
| 39 | 15½ | 52 cm20.5″ | 48 cm18.9″ |
| 40 | 15¾ | 54 cm21.3″ | 50 cm19.7″ |
| 41 | 16 | 56 cm22″ | 52 cm20.5″ |
| 42 | 16½ | 58 cm22.8″ | 54 cm21.3″ |
| 43 | 17 | 60 cm23.6″ | 56 cm22″ |
| 44 | 17½ | 62 cm24.4″ | 58 cm22.8″ |
| 45 | 17¾ | 64 cm25.2″ | 60 cm23.6″ |
| 46 | 18 | 66 cm26″ | 62 cm24.4″ |
Classic Fit
A timeless, refined cut, slightly tapered at the waist for a balanced fit. Our most versatile shirt.
| Ploumanac’h | US / UK | Chest | Waist |
|---|---|---|---|
| 38 | 15 | 51 cm20.1″ | 48 cm18.9″ |
| 39 | 15½ | 53 cm20.9″ | 50 cm19.7″ |
| 40 | 15¾ | 55 cm21.7″ | 52 cm20.5″ |
| 41 | 16 | 57 cm22.4″ | 54 cm21.3″ |
| 42 | 16½ | 59 cm23.2″ | 56 cm22″ |
| 43 | 17 | 61 cm24″ | 58 cm22.8″ |
| 44 | 17½ | 63 cm24.8″ | 60 cm23.6″ |
| 45 | 17¾ | 65 cm25.6″ | 62 cm24.4″ |
| 46 | 18 | 67 cm26.4″ | 64 cm25.2″ |
Relaxed Fit
An easy, comfortable cut with the most room through the body. Laid-back, ideal for everyday wear.
| Ploumanac’h | US / UK | Chest | Waist |
|---|---|---|---|
| 38 | 15 | 52 cm20.5″ | 50 cm19.7″ |
| 39 | 15½ | 54 cm21.3″ | 52 cm20.5″ |
| 40 | 15¾ | 56 cm22″ | 54 cm21.3″ |
| 41 | 16 | 58 cm22.8″ | 56 cm22″ |
| 42 | 16½ | 60 cm23.6″ | 58 cm22.8″ |
| 43 | 17 | 62 cm24.4″ | 60 cm23.6″ |
| 44 | 17½ | 64 cm25.2″ | 62 cm24.4″ |
| 45 | 17¾ | 66 cm26″ | 64 cm25.2″ |
| 46 | 18 | 68 cm26.8″ | 66 cm26″ |
Chest and waist are half-measurements, taken across the garment laid flat. Sleeve length (64–68 cm / 25¼–26¾″) and body length (71–79 cm / 28–31″) are graded by collar size and are the same across all three fits.
Between sizes or unsure which fit to choose? Write to productadvisor@theploumanach.com — we’re happy to advise.