| Size | UK Dress Size | Back Length - Short (cm) | Back Length - Regular (cm) |
| Small Slim | 6 - 8 | 38 | 43 |
| Small Standard | 8 - 10 | 38 | 43 |
| Medium Slim | 10 - 12 | 44 | 49 |
| Medium Standard | 12 - 14 | 44 | 49 |
| Large Slim | 14 - 16 | 50 | 55 |
| Large Standard | 16 - 18 | 50 | 55 |
| Size | UK Dress Size | Back Length - Short (cm) | Back Length - Regular (cm) |
| Small Slim | 6 - 8 | 38 | 43 |
| Small Standard | 8 - 10 | 38 | 43 |
| Medium Slim | 10 - 12 | 44 | 49 |
| Medium Standard | 12 - 14 | 44 | 49 |
| Large Slim | 14 - 16 | 50 | 55 |
| Large Standard | 16 - 18 | 50 | 55 |