Is my chest circumference normal?

Normal women's breasts are attached to the fascia of pectoralis major on both sides, with the upper part starting from the second and third ribs and the lower part attached to the sixth and seventh ribs. The medial side starts from the sternum and the lateral side reaches the axillary midline. The medial 2/3 of the breast lies on the surface of pectoralis major, and the lateral13 passes through the axillary margin of pectoralis major and lies on the surface of serratus anterior. Some outer upper parts of the breast protrude from the armpit, thick and dense. But obese breasts can exceed the above range. Female breasts can be divided into four types, including disc type, hemispherical type, conical type and drooping type.

Breast size varies with race, age, development, nutrition, body shape, obesity and other factors. Western women's breasts are bigger, the well-developed ones are bigger than the poorly developed ones, and the fat ones are bigger than the thin ones. The sizes of the breasts of adult women are basically equal, symmetrical or slightly different. There are not only uniform standards. How to calculate the bra cup? 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. Aa7.5ccmCMB12.5cmc15cmd17.5cme20cmf22.5cm bra size comparison table, the difference between the upper bust and the lower bust, the cup size is about 70cm 80cm 10cm, A 70 a 70 cm 82.5 cm12.5 cm. B 70 b 70 cm 85 cm 65438+.cm 92.5 cm12.5 cm or so B 80B80cm 95cm 15cm or so C 80C 85cm 95cm 1 0cm about A 85A85cm 97.5cm 12.5cm about B85B 85cm 100cm about C 8. 5c 90cm 100cm 10cm A 90cm 102.5cm 12.5cm B 90cm 105cm C 90C。