United Kingdom Size 4–6 to US: S (4–6)

United Kingdom Size 4–6: Bust interval range of 80–85 $\text{cm}$ (31.5–33.5 $\text{in}$), natural waist range of 58.4–63.5 $\text{cm}$ (23–25 $\text{in}$), shoulder width of 36.8 $\text{cm}$ (14.5 $\text{in}$), sleeve length of 76.2 $\text{cm}$ (30 $\text{in}$), style variants Tank Tops, Camisoles, Slim T-Shirts & Fitted Sweaters, and fit classification Petite Contour Fit.

US: S (4–6): Bust interval range of 86.4–90.2 $\text{cm}$ (34–35.5 $\text{in}$), natural waist range of 64.8–68.6 $\text{cm}$ (25.5–27 $\text{in}$), shoulder width of 38.1 $\text{cm}$ (15 $\text{in}$), sleeve length of 77.5 $\text{cm}$ (30.5 $\text{in}$), style variants Blouses, T-Shirts, Tank Tops & Sweaters, and fit classification Slim Tailored Fit.