The document summarizes changes in women's fashionable silhouettes and corsetry between 1800-1920. During 1800-1840, waists were high but fell to the natural waist by the late 1820s. Innovations like gussets, metal eyelets, and quilting were introduced. Between 1840-1860, waists continued falling and innovations like the front-fastening busk and wider acceptable waists emerged. The 1870-1890 period featured the small-waisted hourglass figure and inventions like the spoon busk. Corsets reached the thighs by 1910-1920 and incorporated elastic inserts, supporting 12-20 bones.