As of 2015, Rago, Venus and Secrets in Lace are some modern brands of open-bottom girdles. Vintage brands include Vanity Fair, Marcel Worth and Roaman's.
Girdles are a type of shapewear that were invented in the 1910s as a replacement for the corset. There are four basic girdle styles: the long-leg panty girdle, the open-bottom girdle, the control brief and the all-in-one girdle. The open-bottom girdle was most popular in the 1940 and 1950s due to the popular trends in fashion and the dominating silhouette of the period. Modern girdle designs are typically constructed of interwoven nylon and Lycra spandex to provide the most comfortable fit.