Blonde Girl Wearing A Red Corset

The corset reached its longest length in the early 20th century. The longline corset at first reached from the bust down to the upper thigh. There was also a style of longline corset that started under the bust, and necessitated the wearing of a brassiere. This style was meant to complement the new silhouette. It was a boneless style, much closer to a modern girdle than the traditional corset. The longline style was abandoned during World War I.
The corset fell from fashion in the 1920s in Europe and North America, replaced by girdles and elastic brassieres, but survived as an article of costume. Originally an item of lingerie, the corset has become a popular item of outerwear in the fetish, BDSM and goth subcultures. In the fetish and BDSM literature, there is often much emphasis on tightlacing, and many corset makers cater to the fetish market.
Outside the fetish community, living history re-enactors and historic costume enthusiasts still wear corsets according to their original purpose, to give the proper shape to the figure when wearing historic fashions. In this case, the corset is underwear rather than outerwear. Skilled corset makers are available to make reproductions of historic corset shapes, or to design new styles.
There was a brief revival of the corset in the late 1940s and early 1950s, in the form of the waist cincher sometimes called a "waspie". This was used to give the hourglass figure dictated by Christian Dior's 'New Look'. However, use of the waist cincher was restricted to haute couture, and most women continued to use girdles. This revival was brief, as the New Look gave way to a less dramatically-shaped silhouette.