US: M (8–10) to United Kingdom Size 16–18

US: M (8–10): Waist contouring range of 71.1–73.7 $\text{cm}$ (28–29 $\text{in}$), full hip range of 96.5–99.1 $\text{cm}$ (38–39 $\text{in}$), style variants Panties, Briefs, Bikinis & Boy Shorts, and fit classification Classic Regular Fit.

United Kingdom Size 16–18: Waist contouring range of 76.2–81.3 $\text{cm}$ (30–32 $\text{in}$), full hip range of 101.6–106.7 $\text{cm}$ (40–42 $\text{in}$), style variants Briefs, High-Waist Panties & Boy Shorts, and fit classification Comfort Stretch Fit.