Braless Celebrity Girl

There are several sizing systems in different countries. Most use the chest circumferences measurement system and cup sizes A-B-C+, but there are some significant differences. Most bras available usually come in 36 sizes, but bra labeling systems used around the world are at times misleading and confusing. Cup and band sizes vary around the world. For example, most women assume that a B cup on a 34 band is the same size as a B cup on a 36 band. In fact, bra cup size is relative to the band size, as the actual volume of a woman's breast changes with the dimension of her chest. In countries that have adopted the European EN 13402 dress-size standard, the torso is measured in centimetres and rounded to the nearest multiple of 5 cm.
A number of reports state the 80-85% of women are wearing the wrong bra size. A correctly fitted bra is determined by accurately calculating the chest size (or band size) and breast volume (the cup size). The band size can be adjusted slightly using the two or three alternate sets of fastening hooks and eyes in the clasp. The bra straps (over the shoulders) can usually also be adjusted slightly.
• Mechanical design
Bra designers liken designing a bra to building a bridge, because similar forces are at work. Just as a bridge is affected vertically by gravity and horizontally by earth movement and wind, forces affecting a bra's design include gravity and sometimes tangential forces created when a woman runs or turns her body. "In many respects, the challenge of enclosing and supporting a semi-solid mass of variable volume and shape, plus its adjacent mirror image—together they equal the female bosom—involves a design effort comparable to that of building a bridge or a cantilevered skyscraper."