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

United Kingdom Size 24–26: Bust interval range of 113–119.4 $\text{cm}$ (44.5–47 $\text{in}$), natural waist range of 91.4–97.8 $\text{cm}$ (36–38.5 $\text{in}$), shoulder width of 45.1 $\text{cm}$ (17.75 $\text{in}$), sleeve length of 82.6 $\text{cm}$ (32.5 $\text{in}$), style variants Plus Blouses, Extended T-Shirts, Sweaters & Knitwear, and fit classification Extended Plus Fit.

US: XL (16–18): Bust interval range of 105.4–111.8 $\text{cm}$ (41.5–44 $\text{in}$), natural waist range of 83.8–90.2 $\text{cm}$ (33–35.5 $\text{in}$), shoulder width of 43.2 $\text{cm}$ (17 $\text{in}$), sleeve length of 81.3 $\text{cm}$ (32 $\text{in}$), style variants Relaxed Blouses, T-Shirts, Sweaters & Tunics, and fit classification Generous Full Fit.