[Revilo]

A brassiere (pronounced UK: /ˈbręzɪər/, US: /brəˈzɪər/; commonly referred to as a bra /ˈbrɑː/) is an undergarment that covers, supports, and elevates the breasts. Since the late 19th century, it has replaced the corset as the most widely accepted method for supporting breasts.

Manufacturers produce an extremely wide variety of bras today that serve a variety of purposes. Bras can enhance the perceived shape of a woman's breasts, minimize or enlarge her perceived breast size, restrain breast movement during an activity such as exercise, enhance her cleavage, conceal her nipples, overcome sagging, serve prosthetic purposes, or facilitate nursing. In certain circumstances, like the work place, employers may require a woman to wear a bra. In most Western countries, the majority of women wear bras, although a minority choose to go without, sometimes for health or comfort reasons. Breast support is built into some garments like camisoles, tank-tops and backless dresses, alleviating the need to wear a separate bra.

Most bras are designed to be form-fitting, to lift the breasts off the chest wall if they sag, and to restrain their movement. Bra designers and manufacturers originally produced bras that were purely functional and gradually added elements to improve the design, but they have now largely shifted from functionality to fashion. Manufacturers' standards and sizes vary widely, making it difficult for women to find a bra that fits. Bra-measurement procedures conflict with one another. Even professional bra fitters disagree on the correct size for the same woman. Women's breasts vary widely in size and shape; most are asymmetric to a degree and can change from month to month depending on the menstrual cycle, pregnancy, or weight gain or loss. As a result, from 75–85% of women wear the incorrect bra size.[1]

The bra has become a garment with erotic significance and a feminine icon or symbol with political and cultural significance beyond its primary function. Some feminists consider the brassiere a symbol of the repression of women's bodies.[2] Culturally, when a young girl gets her first bra, it may be seen as a rite of passage and symbolic of her coming of age.[3]

I'm going to try and post a few different types...