Bra size approximately match dress size.
For example: 32"/AU10 = dress size 10 If your bra size does not match your dress size, try going up/down size.
For example you are 12C, dress size 10. Consider 10D corselette which will have the same cup size as a 12C but will be smaller around the body. Keep in mind bra grading: 10D = 12C= 14B (and so on)