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Flight attendants or cabin crew (also known as stewards/stewardesses or air hosts/hostesses) are members of an aircrew employed by airlines primarily to ensure the safety and comfort of passengers aboard commercial flights, on select business jet aircraft, and on some military aircraft...

A sports bra is a bra that provides additional support to female breasts during physical exercise. Sturdier than typical bras, they minimize breast movement, alleviate discomfort, and reduce potential damage to chest ligaments. Many women wear sports bras to reduce pain, and physical discomfort caused by breast movement during exercise. Some sports bras are designed to be worn as outerwear during exercise such as jogging...

Cleavage is the space between a woman's breasts lying over the sternum revealed by a garment with a low neckline that sometimes allows people to see the woman's bra. It is associated with low-cut women's clothing, such as evening gowns, swimwear, casual tops and other garments, designed to emphasize the display of breasts...

A twin is one of two offspring produced in the same pregnancy. Twins can either be identical (in scientific usage, "monozygotic"), meaning that they develop from one zygote that splits and forms two embryos, or fraternal ("dizygotic") because they develop from two separate eggs that are fertilized by two separate sperm. In contrast, a fetus which develops alone in the womb is called a singleton, and the general term for one offspring of a multiple birth is multiple...