The size of the cup is the difference between the upper bust minus the lower bust. According to the measurement result in step 1, the size of the cup is determined by the difference between the bust size and the lower bust size.
The word "extended data 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. The word "cup" is translated quite vividly by China people, because apart from the belt, there are only two cups that cover the breast, and it is easy to understand to measure the size of the breast by the size of the cup. Experts suggest that if you want to achieve the ideal cup, you can choose exercise breast enhancement.
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. The size between two cups is measured by a long enough back buckle.
References:
Baidu encyclopedia-bust
Baidu encyclopedia-cup