Measure the bust at its largest point, keeping the measuring tape parallel to the floor the whole way around and laying flush to the skin but not drawn in. Count one cup size for every inch difference between the band measurement and bust measurement as follows: A = 1 inch, B = 2 inches, C = 3 inches, D = 4 inches, DD = 5 inches, E = 6 inches, F = 7 inches, G = 8 inches, H = 9 inches, HH = 10 inches, I = 11 inches, J = 12 inches, K = 13 inches, etc. *Note: If the breast tissue lacks volume or sags, complete the measurement wearing a unpadded bra. If a padded bra is used, subtract 1-2 inches from the bust measuremen