1, ABCDEF, a series of English letters, indicating the size of bra cups. The upper bust minus the lower bust is the cup size. The size of a cup depends on its depth. The bust at the highest point of the breast (one of the three measured values) MINUS the length of the next week of the breast is the cup.

2. The division of bra cups (the difference between upper and lower bust) is represented by letters, and the bigger the letters, the bigger the cups. The difference between each cup is 2.5 cm. Among them, AA and F are not common, and generally there are more B cups and C cups. Therefore, you should choose the appropriate cup according to your body shape.

AA cup: within 7.5cm

A cup: within10.0cm.

B cup: within12.5cm.

C cup: within15.0cm.

D cup: within17.5cm.

E cup: within 20.0cm

For example, your lower bust is 79, which is 80, and your upper bust is 92. Subtract the two numbers to get 13cm, which is the B cup. Put them together, the bra you should wear is 80B.

If your upper circumference is 87.5cm, your lower circumference is 75cm, and the difference between upper and lower bust is 12.5cm, then your cup is B, and you should choose the size of 75B.

Extended data

The word "cup" was defined by the French. Because the bra was invented by the French in the 1920s, its original name was corset. Bra is abbreviated as bra, which comes from French. When the French invented the bra, they also determined the unit of breast or the breast size derived from it.

According to the shape of the cup, the cup can be divided into full-face bra, 3/4 cup bra and 1/2 cup bra. The so-called full-face bra means that the cup contains all the breasts, which has the function of supporting and improving concentration, and is the most functional cup. Suitable for any body shape, suitable for people with big breasts and soft meat. (That's 4/4)

3/4 cup is the most concentrated style among the three bras. If you want cleavage to appear clear, you must choose 3/4 cups to highlight the curve of the breast. Any body shape is suitable. (3/4 is the cup with 1/4 exposed)

1/2 cup bra is suitable for matching clothes. This kind of bra can usually take off the shoulder strap and become off-the-shoulder underwear, which is suitable for off-the-shoulder clothes. Although the functionality is weak, the promotion effect is still quite good, and the petite chest will look fuller after wearing it.