When trying to decide between two sizes, choose the larger size for a better fit.
| Size | Chest | Waist | Hips | Height | Weight | |
| XXS (2) | 20 | 20 - 20.5 | 21.5 | 34 - 36 | 32-34 lbs. | |
| XS (4) | 22 | 21 - 21.5 | 23.5 | 39 - 41 | 37-46 lbs. | |
| S (6) | 24 | 22 - 22.5 | 25.5 | 45 - 46 | 57-60 lbs. | |
| M (8) | 27 | 23 - 23.5 | 28.5 | 52 - 53 | 72-81 lbs. | |
| L (10) | 28.5 | 24 - 24.5 | 30 | 54 - 55 | 82-85 lbs. | |
| XL (12) | 30 | 25 - 25.5 | 32 | 56 - 58 | 86-92 lbs. | |
| XXL (14) | 31.5 | 26 - 26.5 | 34 | 59 - 60.5 | 92-95 lbs. | |
| XXXL (16) | 33 | 27 - 27.5 | 36 | 61.5 - 63 | 100-105 lbs. | |
| Tween XS (6-8) | 24.5 - 26.5 | 22- 23 | 26.5 - 28.5 | 49.5 - 52.5 | 70-77 lbs. | |
| Tween S (8-10) | 26 - 28 | 23 - 24 | 28 - 30 | 52 - 55 | 77-81 lbs. | |
| Tween M (10-12) | 28 - 30 | 24 - 25 | 30 - 32 | 55 - 58 | 81-85 lbs. | |
| Tween L (12-14) | 30 - 32 | 25 - 26 | 32 - 34 | 58 - 61 | 85-95 lbs. | |
| Tween XL (14-16) | 32 - 34 | 26.5 - 27.5 | 34 - 36 | 61 - 63 | 95-105 lbs. |
