Bra size

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Bra size (also known as brassiere measurement or bust size) indicates the characteristics of a bra to accurately fit the breasts. While there are multiple bra sizing systems in use around the world, the bra size usually consists of a number indicating the size of the band around the torso, and one or more letters that indicate the breast cup size. Bra cup sizes were invented in 1932 while band sizes became popular in the 1940s. For convenience, because of the impracticality of determining the dimensions of each breast, the volume of the bra cup, or cup size, is based on the difference between band length and over-the-bust measurement. Manufacturers try to design and manufacture bras that correctly fit the majority of wearers, while individuals try to identify correctly fitting bras among different styles and sizing systems. Manufacturers' bra size labelling systems vary by country because no comprehensive international standards exist. Even within a country, one study found that the bra...

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