Charmline Swimwear
| UK Dress Size | Europe | Italy | USA |
| 8 | 36 | 40 | 6 |
| 10 | 38 | 42 | 8 |
| 12 | 40 | 44 | 10 |
| 14 | 42 | 46 | 12 |
| 16 | 44 | 48 | 14 |
| 18 | 46 | 50 | 16 |
Charmline Beachwear
| Size | UK Dress Size | Europe | USA |
| Small | 8-10 | 36-38 | 6-8 |
| Medium | 12-14 | 40-42 | 10-12 |
| Large | 16-18 | 44-46 | 14-16 |
| Extra Large | 20-22 | 48-50 | 18-20 |