Bonnets or hats were worn outdoors and linen caps indoors. During the 1820s hair styles became very elaborate with raised top knots and the crowns of bonnets or hats were designed to accommodate them. By the middle of the century, by contrast, hairstyles had become smooth with a central parting finished with ringlets on either side of the face and a small bun at the back or simply swept back from the face to a chignon (a mass of hair arranged on a pad at the back of the head and held in place with a net or snood). Bonnets and hats continued to be worn until the 1860s when small, elegant styles appeared which simply perched on top of the head. Even smaller hats appeared in the 1870s when hairstyles rose in the form of elaborate chignons. In the 1880s and 1890s hairstyles remained `up' but did not retain the heights or bulk of the 1870s styles. Small hats decorated with birds and feathers and artificial flowers were fashionable.