United Kingdom Size 12–14 to US: XL (16–18)

United Kingdom Size 12–14: Bust interval range of 91.4–96.5 $\text{cm}$ (36–38 $\text{in}$), natural waist range of 69.9–74.9 $\text{cm}$ (27.5–29.5 $\text{in}$), shoulder width of 39.4 $\text{cm}$ (15.5 $\text{in}$), sleeve length of 78.7 $\text{cm}$ (31 $\text{in}$), style variants Blouses, T-Shirts, Tank Tops, Sweaters & Cardigans, and fit classification Classic Regular 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.