Find the measurement where you need the largest size.
I.e.: Chest=33 in Waist=30 in Hips=38 in
Chest=Size 4
Waist=Size 8
Hips=Size 4
--> Choose size 8
Size Details in inches: (Bust/Waist/Hips) US Size 2: 31.5/24/36 US Size 4: 33.5/26/38 US Size 6: 35.5/28/41 US Size 8: 38/30.5/42 US Size 10: 40.5/33/44 US Size 12: 42.5/35/46 US Size 14: 45.5/38/49.5 US Size 16: 48/40.5/52 US Size 18: 51/43.5/55 US Size 20: 53.5/46/57 US Size 22: 57/49/61 US Size 22: 57/49/61