United Kingdom Size 18 to US: 6 M

United Kingdom Size 18: Features a height of 175 $\text{cm}$ (68.9 $\text{in}$), bust contour of 107 $\text{cm}$ (42.1 $\text{in}$), waist shaping of 88 $\text{cm}$ (34.6 $\text{in}$), hip flare of 113 $\text{cm}$ (44.5 $\text{in}$), and silhouette cut: Natural Waist / Frock.

US: 6 M: Features a height of 172 $\text{cm}$ (67.7 $\text{in}$), bust contour of 94 $\text{cm}$ (37 $\text{in}$), waist shaping of 75 $\text{cm}$ (29.5 $\text{in}$), hip flare of 100 $\text{cm}$ (39.4 $\text{in}$), and silhouette cut: Natural Waist / Evening Gown.