Corselet, or merry widow, combined brassiere and girdle.
From the en.wikipedia.org
The corselet is considered to be a type of foundation garment, and the modern corselet is most commonly known as a shaping slip.
From the en.wikipedia.org
Riot dress consists of a field-type jacket, which covered several pieces of body armor and includes a corselet hung from the waist, an aluminum plate down the spine, and shoulder pads.