Bralessness
Bralessness is the state of not wearing a brassiere as part of a woman's underwear. Women may choose to not wear a bra due to discomfort, health-related issues, their cost, or for social and cultural reasons.
As of 2006, about 10% of Australian women did not wear a bra. Surveys have reported that 5–25% of Western women do not wear a bra.