US: 8 to Europe Size 86

US: 8: Corresponds to a height baseline of 128 $\text{cm}$ (50.4 $\text{in}$), a weight baseline of 27 $\text{kg}$ (59.5 $\text{lbs}$), and a chest baseline of 68 $\text{cm}$ (26.8 $\text{in}$).

Europe Size 86: Corresponds to a height baseline of 86 $\text{cm}$ (33.9 $\text{in}$), a weight baseline of 12.5 $\text{kg}$ (27.5 $\text{lbs}$), and a chest baseline of 52 $\text{cm}$ (20.5 $\text{in}$).