It is impossible to tell your dress size without your measurements. However a guide has been provided as follows for you to determine your dress size: UK dress sizes range from 8, 10, 12, 14, 16, 18 and 20. The measurements in inches for each size are as follows: Size 8 Bust-32, Waist-24 and Hips-35. Size 10 Bust-331/2, Waist-26 and Hips-361/2. Size 12 Bust-35, Waist-28 and Hips 38. Size 14 Bust-361/2, Waist-30 and Hips 40. Size 16 Bust-38, Waist-32 and Hips 42. Size 18 Bust-40, Waist-34 and Hips 44.