Europe Size 54 to US: XS

Europe Size 54: Features a chest width of 112 $\text{cm}$ (44.1 $\text{in}$), shoulder breadth of 50.5 $\text{cm}$ (19.9 $\text{in}$), and sleeve length of 93 $\text{cm}$ (36.6 $\text{in}$) with built-in layering allowance.

US: XS: Features a chest width of 88 $\text{cm}$ (34.6 $\text{in}$), shoulder breadth of 42 $\text{cm}$ (16.5 $\text{in}$), and sleeve length of 81 $\text{cm}$ (31.9 $\text{in}$) with built-in layering allowance.