Grand Prix Dance wear Youth Size Chart
| GP Size | US Size | Chest | Waist (Girls) | Waist (Boys) | Girth |
| 28 | 2.5 - 3 | 22" | 20.5" | 20" | 36" |
| 29 | 3 - 3.5 | 22.75" | 20.75" | 21" | 38" |
| 30 | 4 | 23.75" | 21.25" | 22" | 40" |
| 31 | 5 | 24.5" | 21.75" | 23" | 42" |
| 32 | 6 | 25.25" | 22.5" | 24" | 44" |
| 34 | 7 | 27.75" | 23.25" | 24.5" | 46" |
| 36 | 8 - 9 | 28.5 | 24.25" | 25" | 48" |
| 38 | 9 - 10 | 29.25" | 25" | 25.5" | 50" |
| 40 | 11 - 12 | 30" | 25.5" | 26" | 52" |
| 42 | 12 - 13 | 30.75" | 26" | 26.5" | 54" |