In this period, in addition to the corset, the strong contrast produced by expanding the skirt can also achieve visual effects. The unfolding of the skirt is realized by wearing several layers of petticoats, generally overlapping at least four to six layers and at most thirty layers. Therefore, people have created ponytail-lined hard petticoats, some of which are made of wool, silk or cotton fabrics. So a new kind of skirt was born, called crinoline, which comes from Italian and means horse hair and hemp. At the end of 1850, the British invented a new type of hard lining Klinolin without ponytail, with whale bone, bird feather stem bone, thin iron wire or rattan as wheel bones, which were connected by belts to form a birdcage skirt. This kind of skirt was introduced to France in 1860, and was loved by the court and upper-class ladies with Queen Eugénie as the center, and quickly became a popular dress, so that it affected all walks of life in western European countries, and even the peasant women followed its form, so this period was also called the Klingon era in the history of clothing.