SIZE13

 Size Waist(in) Hip(in)
S 26-28 36-37.5
M 28-32 38-40.5
L 32-34.5 41-42.5
XL 35-38.5 43-45.5
2XL 39-41.5 46-49.5

The sizes are manually measured with error from 0.2 to 0.8 inches.