For best results choose the same size that your gymnast or dancer is currently wearing in regular US Girls size jeans/pants. If the pants size is a "slim" size, go down to the next size. Example: jeans, girls size 6slim, order size 5 (CXS) in Velvet Leotards items. All items are snug fitting so if extra room is desired, go a size up.
In most pieces, there is not a large difference in one size to the next. Velvet Leotards one-piece leos are longer in the torso than most national brands, to accommodate a long torso or round tummy. When purchasing a one-piece leo, there's generally no need to go up a size from pants size worn.
Within each product category, you will find a chart with approximate finished dimensions of each item, measured unstretched. Use this information to compare items to ones you may have that fit nicely.
The following is a body measurements chart for general purposes. Please use the suggested method above for choosing size before using the chart below.
| Size | Chest | Waist | Hips |
| 2T | 20-21" | 20-20 1/2" | 21-22 (w/diaper) |
| 3T | 21-22" | 20 1/2-21" | 21-22" |
| 4(CXXS) | 22-23" | 21-21 1/2" | 22-23 1/2" |
| 5(CXS) | 23-24" | 21 1/2-22" | 23 1/2-24 1/2" |
| 6(CS) | 24-25" | 22-22 1/2" | 24 1/2-25 1/2" |
| 7(CM) | 25-26" | 22 1/2-23" | 25 1/2-27" |
| 8(CL) | 26-27" | 23-23 1/2" | 26 1/2-28" |
| 10(AXS) | 27-28" | 23 1/2-24 1/2" | 28-30" |
| 12(AS) | 28-30" | 24 1/2-25 1/2" | 30-32" |
| 14(AM) | 30-32" | 25 1/2-26 1/2" | 32-34" |
| AL(Jr. 3-5) | 32-34" | 26-28" | 34-36" |