Lilly + Sid Size Chart
| Age | Height (in) | Weight (lbs) | Waist (in) |
| 0-3 months | 22-24 | 7-13 | 16 |
| 3-6 months | 24-27 | 13-17.5 | 16.5 |
| 6-12 months | 27-30 | 17.5-22 | 17.5 |
| 12-18 months | 30-33 | 22-26.5 | 18 |
| 18-24 months | 33-35.5 | 26.5-31 | 19 |
| 2-3 years | 35.5-38.5 | 19.5 | |
| 3-4 years | 38.5-41 | 20.5 | |
| 4-5 years | 41.5-43.5 | 21 | |
| 5-6 years | 43.5-45.5 | 22 | |
| 6-7 years | 45.5-48 | 23 | |
| 7-8 years | 48-50.5 | 24 |