Not only Americans, but also people in all western countries, including countries in the Arctic Circle, wear them in winter, which is related to their beef-based diet structure. They are not afraid of the cold, or they have to wear it to show their beauty. Moreover, none of them wore stockings, and they all wore miniskirts barefoot. Only people in China are too hot to wear skirts. Even if people wear skirts in spring and autumn or winter, they should wear thick stockings or leggings inside. This way of dressing is actually extremely rude. As long as it is not particularly cold, people will wear skirts barefoot! This is caused by different values.