Female toplessness in the United States
In the United States, individual states have primary jurisdiction in matters of public morality. The topfreedom movement has claimed success in a few instances in persuading some state and federal courts to overturn some state laws on the basis of sex discrimination or equal protection, arguing that a woman should be free to expose her chest (be topless) in any context in which a man can expose his.
Source: Wikipedia — Female toplessness in the United States (CC BY-SA 4.0)