…in America which crossed fashion eras on either side of 1790 to 1825.
A Regency costume is one of the least expensive we can make you, for the same reasons it was popular back then – there’s only a tiny bit of inexpensive fabric, short stays (corset), and not a whole lot that is worn underneath.
(photo: Party like it’s 1818! BBC made a version of Jane Austen’s “Pride and Prejudice”. Here is a scene from “Netherfield’s Ball”)