Bras and swimsuits:

Cut Underbust circumference Breast circumference
B Cup Cup C D Cup
5 87/91 99/103 104/108 109/113
6 92/96 104/108 109/113 114/118
7 97/101 109/113 114/118 119/123
8

Briefs
Cut Hip circumference Waist circumference
5 109/113 82/86
6 114/118 87/91
7 115/119 92/96
8 120/124 97/103