US: 0-3M to Europe Size 68

US: 0-3M: Corresponds to a height baseline of 62 $\text{cm}$ (24.4 $\text{in}$), a weight baseline of 6 $\text{kg}$ (13 $\text{lbs}$), and a chest baseline of 43 $\text{cm}$ (16.9 $\text{in}$).

Europe Size 68: Corresponds to a height baseline of 68 $\text{cm}$ (26.8 $\text{in}$), a weight baseline of 8 $\text{kg}$ (17.5 $\text{lbs}$), and a chest baseline of 46 $\text{cm}$ (18.1 $\text{in}$).