US: 20 2XL to United Kingdom Size 6

US: 20 2XL: Features a height of 175 $\text{cm}$ (68.9 $\text{in}$), bust contour of 127 $\text{cm}$ (50 $\text{in}$), waist shaping of 108 $\text{cm}$ (42.5 $\text{in}$), hip flare of 133 $\text{cm}$ (52.4 $\text{in}$), and silhouette cut: Natural Waist / Plus Gown.

United Kingdom Size 6: Features a height of 165 $\text{cm}$ (65 $\text{in}$), bust contour of 82 $\text{cm}$ (32.3 $\text{in}$), waist shaping of 63 $\text{cm}$ (24.8 $\text{in}$), hip flare of 88 $\text{cm}$ (34.6 $\text{in}$), and silhouette cut: Natural Waist / Shift.