Below are the size guides for the different items:
| Grow With Me sizes (in inches) | 3 – 12 months | 1 – 3 years | 3 – 6 years | 6 – 9 years | 9 – 12 years |
| Inseam | 6.5″ – 9″ | 9″ – 13.5″ | 13.5″ – 18″ | 17.75″ – 22.25″ | 22.25″ – 26.25″ |
| Hip/Seat circumference | 17.5″ – 19.5″ | 19.5″ – 22″ | 22″ – 25″ | 25″ – 28.5″ | 28.5″ – 31″ |
| Thigh circumference | 9.5″ – 11″ | 11″ – 12.5″ | 12.5″ – 15.25″ | 14.25″ – 17.25″ | 17.25″ – 18.5″ |
| Waist circumference | 17″ – 19″ | 19″ – 21″ | 21″ – 23″ | 23″ – 25″ | 25″ -26.5″ |
| Chest circumference | 17″ – 19″ | 19″ – 21″ | 21″ – 24″ | 24″ – 27″ | 27″ – 28.5″ |
| Height | 24″ – 30″ | 30″ – 38″ | 38″ – 46.5″ | 46.5″ – 53.5″ | 53.5″ – 58.5″ |
Hip/Seat Circumference: Horizontal distance around the hips/bum at the fullest part.
Thigh Circumference: Horizontal distance around the thigh, measured at the fullest part (usually near the top of the thigh/crotch).
Waist Circumference: Horizontal distance around the waist, at the point where a crease forms if your child bends to the side.
Chest Circumference: Horizontal distance around the chest at the fullest part.
Height: Vertical distance from the top of the head to the soles of the feet.
Given the handmade nature of the items there may be small differences between individual items. If your measurements are on the edge of the size guides I would recommend sizing up.
| Headbands (inches) | Baby | Toddler | Child | Adult |
| Head size | 16″ – 19″ | 18″ – 20″ | 20″ – 22″ | 22″ – 24″ |
| Women’s pants (inches) | A | B | C | D | E | F | G | H | I |
| Full hip | 30 – 32 | 33 – 35 | 35 – 38 | 38 – 40 | 41 – 43 | 44 – 46 | 47 – 50 | 51 – 54 | 55 – 58 |
| Low waist | 26 – 28 | 29 – 31 | 32 – 34 | 35 – 37 | 38 – 40 | 41 – 43 | 44 – 47 | 48 – 51 | 52 – 55 |
| Adult oversized tee (inches) | Bust | Waist | Hips/Seat |
| Size A | 29 – 32.5 | 23.5 – 24.75 | 33.5 – 35.5 |
| Size B | 33 – 34 | 25 – 26 | 35.75 – 37.25 |
| Size C | 34.25 – 35.25 | 26 – 27 | 37.5 – 38.25 |
| Size D | 35.5 – 36.25 | 27 – 28 | 38.5 – 39.25 |
| Size E | 36.5 – 39.5 | 28.25 – 31.5 | 39.5 – 42.5 |
| Size F | 40 – 42.5 | 32 – 36.5 | 43 – 46 |
| Size G | 43 – 44.5 | 36.75 – 40.5 | 46.5 – 49 |
| Size H | 45 – 48.5 | 41 – 45 | 50 – 53 |
| Size I | 49 – 52.5 | 45.5 – 48 | 53.5 – 56.5 |
| Size J | 53 – 56 | 48.5 – 51 | 57 – 59 |
| Size K | 57 – 60 | 52 – 56 | 60 – 63 |
| Size L | 61 – 63 | 57 – 60 | 64 – 67 |
| Size M | 64 – 67 | 61 – 63 | 68 – 72 |