Whalebone corsets were popular undergarments worn by women from the late 16th century to the early 20th century. Made from the flexible baleen plates of whales, these corsets provided structure and support to shape the waist and enhance the silhouette. They were often worn under dresses to create an hourglass figure, which was considered fashionable during that time. The use of whalebone in corsets declined with the advent of synthetic materials and changing fashion trends. By the late 19th century, alternatives like steel and plastic became more common. Today, whalebone corsets are mostly seen in historical exhibits or vintage fashion collections, reflecting the evolution of women's clothing and societal norms.