Generally, if the wearer must continually adjust the bra or experiences general discomfort, the bra is a poor fit and she should get a new fitting.
produce inconsistent measurements of the same person.
Determining the correct bra size (also known as brassiere measurement or bust size) is the process manufacturers engage in to design and manufacture bras that correctly fit a majority of women, and for individual women, the process of identifying a correctly fitting bra.
Bra sizes usually consist of one or more letters indicating the breast cup size and a number, indicating a band size around the woman's torso.
Customers should pay attention to which sizing system is used by the manufacturer.
The main difference is in how cup sizes increase, by 2 cm or 1 inch (= 2.54 cm, see below).
Two other companies, Model and Fay-Miss (renamed in 1935 as the Bali Brassiere Company) followed, offering A, B, C and D cup sizes in the late 1930s.
Catalog companies continued to use the designations Small, Medium and Large through the 1940s.
It is possible to test whether a bra band is too tight or too loose by reversing the bra on her torso so that the cups are at the back and then check for fit and comfort.As the cup size increases, the labeled cup size of different manufacturers' bras tend to vary more widely in actual volume.The current popular system of determining bra size is inaccurate so often as to be useless.Bra cup sizes were invented in 1932 and band sizes became popular in the 1940s.The shape, size, position, symmetry, spacing, firmness, and amount of sagging of individual women's breasts vary considerably.
Adjustable bands were introduced using multiple hook and eye closures in the 1930s.