United Kingdom Size 28 to US: 4-6

United Kingdom Size 28: Corresponds to a relaxed bust range of 121–125 $\text{cm}$ (47.6–49.2 $\text{in}$), elastic waist range of 103–108 $\text{cm}$ (40.6–42.5 $\text{in}$), and comfort drape classification Loose Lounge Fit.

US: 4-6: Corresponds to a relaxed bust range of 84–88 $\text{cm}$ (33.1–34.6 $\text{in}$), elastic waist range of 66–70 $\text{cm}$ (26–27.6 $\text{in}$), and comfort drape classification Relaxed / Comfort Drape.