Rubies - Shaping Underwear Size Guide
Measure all the way around the waist just under the belly button. Pick the size based on which waist range it fits in.
| Kids Size | Waist Measurement Range |
| Kids 4 | 18" - 19.5" / 45.5 - 49.5 cm |
| Kids 6 | 19.5" - 21.5" / 49.5 - 54.5 cm |
| Kids 8 | 21.5" - 23.5" / 54.5 - 59.5 cm |
| Kids 10 | 23.5" - 25.5" / 59.5 - 65 cm |
| Adult Size | Waist Measurement Range |
| XS | 25.5" - 26.5" / 65 - 67.5 cm |
| XS+ | 26.5" - 27.5" / 67.5 - 70 cm |
| S | 27.5" - 29.5" / 70 - 75 cm |
| M | 29.5" - 32" / 75 - 81.5 cm |
| L | 32" - 34.5" / 81.5 - 87.5 cm |
| XL | 34.5" - 37" / 87.5 - 94 cm |
| XXL | 37" - 39.5" / 94 - 100.5 cm |
| 3XL | 39.5" - 42" / 100.5 - 106.5 cm |