US: 18 2XL to United Kingdom Size 10

US: 18 2XL: Features a height of 175 $\text{cm}$ (68.9 $\text{in}$), bust contour of 122 $\text{cm}$ (48 $\text{in}$), waist shaping of 103 $\text{cm}$ (40.6 $\text{in}$), hip flare of 128 $\text{cm}$ (50.4 $\text{in}$), and silhouette cut: Relaxed / A-Line Frock.

United Kingdom Size 10: Features a height of 170 $\text{cm}$ (66.9 $\text{in}$), bust contour of 90 $\text{cm}$ (35.4 $\text{in}$), waist shaping of 71 $\text{cm}$ (28 $\text{in}$), hip flare of 96 $\text{cm}$ (37.8 $\text{in}$), and silhouette cut: Empire / Fit-and-Flare.