A hatpin is a decorative and functional pin for holding a hat to the head, usually by the hair. In Western culture, a hatpin is almost solely a female item and is often worn in a pair. They are typically around 20 cm in length, with the pinhead being the most decorated part.
The hatpin was invented to hold wimples and veils in place, and was handmade. In Britain, demand eventually outgrew the number that could be supplied by hand-making, and they began to be imported from France. In 1832 a machine was invented in America which could mass-produce the pins, and they became much more affordable. During the 1880s, bonnets gave way to hats, and the popularity of hatpins soared. They remained a standard women's accessory through the 1910s and were produced in a vast range of materials and types. Hatpin holder boxes were also produced.
Laws were passed in 1908 in America that limited the length of hatpins, as there was a concern they might be used by suffragettes as weapons. Also by the 1910s, ordinances were passed requiring hatpin tips to be covered so as not to injure people accidentally. Various covers were made, but poorer women often had to make do with ersatz items like potato pieces and cork. Hatpins are also collectible items, and there is an American Hatpin Society for collectors in the United States and The Hat Pin Society of Great Britain for collectors in the United Kingdom.