First of all, you should measure your own chest circumference and lower chest circumference (75 in 75A means lower chest circumference), and those with sagging breasts should push their breasts to the normal position for measurement. Optional labels for the lower bust are: 70, 75, 80, 85, 90, 95, 100, 105cm.

Step 2: Make sure that the bra cups AA, A, B, C, D, E and F refer to the cup size, and the bust minus the lower bust is the cup size. If the difference between your bust and your lower bust is 10cm, then you should apply a mask (see the table below). The difference between cup size and lower bust: AA cup is about 7.5cm? A cup is about 10cm? B cup is about 12.5cm? C cup is about 15cm, and D cup is about 17.5cm? E cup is about 20cm? F cup is about 22.5cm

For example, your bust should be 92cm and your lower bust should be 80cm. Subtract the two numbers to get 12cm. Then use a B cup, and the bra you want to wear is 80B.

Because of the manufacturer, material, cup type and style, there are still half cups and three-quarters cups, so you'd better try them on when you buy a bra.

If possible, I suggest that you can measure your bust according to the following dimensions.