Toplessness refers to the state in which a woman's breasts, including her areolas and nipples, are exposed, especially in a public place or in a visual medium. The male equivalent is known as barechestedness.
Social norms around toplessness vary by context and location. Many indigenous societies consider breast exposure to be normal and uncontroversial. At specific beaches and resort destinations, notably in Europe and Australia, girls and women may sunbathe topless either by statute or by custom. However, in most countries, norms of female modesty require girls and women to cover their breasts in public, and many jurisdictions prosecute public toplessness as indecent exposure. The topfreedom movement opposes such laws on the grounds of gender equality.
Art and visual media throughout history, from painting and sculpture to film and photography, have frequently featured toplessness. Such representations are often defended on the grounds of artistic merit; toplessness may also be defended on educational, medical, or political grounds. Toplessness also features prominently in erotica, pornography, and at adult venues ranging from strip clubs to upmarket cabarets (such as the Moulin Rouge).