Spanx Bottoms Sizing
Spanx Size Waist (Inches) Waist (cm) Chest (Inches) Chest (cm)
S 30-32 76-81 34-36 86-91
M 34-36 86-91 38-40 97-102
L 38-40 97-102 42-44 107-112
XL 42-44 107-112 46-48 117-122
2XL 46-48 117-122 50-52 127-132
See our complete fitting guide here