For men, corsets are more customarily used to slim the figure. However, there was a period from around 1820 to 1835 when an hourglass figure (a small, nipped-in look to the waist) was also desirable for men; this was sometimes achieved by wearing a corset.
Corsets were originally quilted waistcoats, worn by French women as an alternative to stiff corsets.(Steele,29)They were only quilted linen, laced in the front,and unboned. This garment was meant to be worn on informal occasions, while stays were worn for court dress. In the 1790s, stays fell out of fashion. This development coincided with the French Revolution, and the adoption of neoclassical styles of dress. Interestingly, it was the men, Dandies, who began to wear corsets.(Steele 36)The fashion persisted thorough the 1840s, though after 1850 men who wore corsets claimed they needed them for "back pain" (Steele 39).
