crinoline
A cage-like structure under a dress used to support the shape of a dress. May sometimes also be worn overtop another garment such as a skirt or leotard. Crinolines are common in lolita fashion and aristocratic clothes. Petticoats serve a similar function.
Examples
- Danbooru post #6469335
- Danbooru post #5489184
- Danbooru post #1700695: side slit showing crinoline
- Danbooru post #8063438: crinoline over clothes