Indecent exposure
Public exposure of the navel has been accepted in public. In the 2000s, the buttocks was often exposed while wearing a thong. For many years, however, it was quite common for women to show boobs at public beaches throughout Europe and South America and even some parts of the United States. From 2010 to 2020, the numbers of women going topless on beaches has taken a sharp drop. This is possibly explained by the rising popularity of the smartphone, combined with websites people share pictures of (partly) naked women.