US: 3XL (24–26) to United Kingdom Size 16–18

US: 3XL (24–26): Waist contouring range of 99.1–104.1 $\text{cm}$ (39–41 $\text{in}$), full hip range of 124.5–129.5 $\text{cm}$ (49–51 $\text{in}$), style variants Extended Plus Briefs & Comfort Foundations, and fit classification Full Figure Plus 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.