Cup size = bust-lower bust (for example: 10cm=A cup, 13cm=B cup, 15cm=C cup, 18cm=D cup, 20cm=E cup).

For example, if a woman has a bust of 85cm and a bust of 70cm, then the bra size is 70cm, and the cup size is 85cm-70cm= 15cm.

Generally, cups are represented by capital English letters such as A, B and C, and are graded every 2.5cm. The minimum size is 7.5cm, a is 10cm, b is 12.5cm, c is 15cm, d is 17.5cm, and e is 20cm, then the special size can be considered.

Extended information: the basic structure of women's underwear;

cup

Generally bowl-shaped, with 1 on the left and right. Generally, there is a fixed arc-shaped steel wire ring on the lower edge, which can support the lower edge of the breast and support the left and right breasts. This is the most important part. According to the coverage area, cups can be divided into full cups, three-quarters cups and half cups.

sling

Surround the part below the breast in a circle around the chest and tie two cups to help fix the cups. The invisible bra does not have this part.

Shoulder strap/shoulder strap

It extends from the upper end of the cup part, passes through the shoulder to the back, and is connected with the shoulder strap. When in use, the elastic length can be adjusted by the adjuster on the shoulder strap, so that the cup part is close to the chest. Strapless bras and invisible bras do not have this part.

Reference: Baidu Encyclopedia Bra