US: 12 L to United Kingdom Size 4

US: 12 L: 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.

United Kingdom Size 4: Features a height of 160 $\text{cm}$ (63 $\text{in}$), bust contour of 78 $\text{cm}$ (30.7 $\text{in}$), waist shaping of 60 $\text{cm}$ (23.6 $\text{in}$), hip flare of 84 $\text{cm}$ (33.1 $\text{in}$), and silhouette cut: Petite / Fitted Bodycon.