US: XS (32–34) to United Kingdom Size 50–52

US: XS (32–34): Corresponds to a chest width of 81.3–86.4 $\text{cm}$ (32–34 $\text{in}$), neck collar girth of 35.6 $\text{cm}$ (14 $\text{in}$), sleeve length of 81.3 $\text{cm}$ (32 $\text{in}$), and fit style Slim Tailored Fit.

United Kingdom Size 50–52: Corresponds to a chest width of 127–132.1 $\text{cm}$ (50–52 $\text{in}$), neck collar girth of 47 $\text{cm}$ (18.5 $\text{in}$), sleeve length of 94 $\text{cm}$ (37 $\text{in}$), and fit style Extended Plus Fit.