Europe Size 50 to US: 0-3M

Europe Size 50: Corresponds to a height baseline of 50 $\text{cm}$ (19.7 $\text{in}$), a weight baseline of 3.4 $\text{kg}$ (7.5 $\text{lbs}$), and a chest baseline of 38 $\text{cm}$ (15 $\text{in}$).

US: 0-3M: Corresponds to a height baseline of 56 $\text{cm}$ (22 $\text{in}$), a weight baseline of 5 $\text{kg}$ (11 $\text{lbs}$), and a chest baseline of 41 $\text{cm}$ (16.1 $\text{in}$).