Brunette Girl Undresses A Red Corset

Construction
Corsets are typically constructed of a flexible material (like cloth, particularly coutil, or leather) stiffened with boning (also called ribs or stays) inserted into channels in the cloth or leather. In the 19th century, bones of elephant, moose, and whale were favored for the boning.. Plastic is now the most commonly used material for lightweight corsets and the majority of poor quality corsets, whereas spring or spiral steel is preferred for stronger corsets and generally the better quality corset too. Other materials used for boning include ivory, wood, and cane. (By contrast, a girdle is usually made of elasticized fabric, without boning.)
Corsets are held together by lacing, usually (though not always) at the back. Tightening or loosening the lacing produces corresponding changes in the firmness of the corset. Depending on the desired effect and time period, corsets can be laced from the top down, from the bottom up, or both up from the bottom and down from the top, using two laces that meet in the middle. It is difficult—although not impossible—for a back-laced corset-wearer to do his or her own lacing. In the Victorian heyday of corsets, a well-to-do woman's corset laces would be tightened by her maid, and a gentleman's by his valet. However, Victorian corsets also had a buttoned or hooked front opening called a busk. If the corset was worn loosely, it was possible to leave the lacing as adjusted and take the corset on and off using the front opening (if the corset is worn snugly, this method will damage the busk if the lacing is not significantly loosened beforehand). Self-lacing is also almost impossible with tightlacing, which strives for the utmost possible reduction of the waist. Corset and bodice lacing became a mark of class, front laced bodices being worn by women who could not afford servants.