When trying to decide between two sizes, choose the larger size for a better fit.
| Size | Chest | Waist | Height |
| XSmall (2-4) | 20-22 | 20-21 | 36-41 |
| Small (4-6) | 22-24 | 21-22 | 41-47 |
| Medium (8-10) | 26-28 | 23-24 | 52-55 |
| Large (12-14) | 30-32 | 25-26 | 57-61 |
| Xlarge (14-16) | 32-34 | 26-27 | 61-64 |
| S/M (4/10) | 22-28 | 21-24 | 41-55 |
| L/XL (12/16) | 30-34 | 25-27 | 57-64 |
| Tween M (8-10) | 26-28 | 23-24 | 52-55 |
| Tween L (12-14) | 30-32 | 25-26 | 57-61 |
| Tween XL (14-16) | 32-34 | 26-27 | 61-64 |
| Child OS | 26-32 | 23-26 | 52-61 |