Brunswick gown

noun1

1. •
   (historical) A two-piece woman's gown of the mid-18th century, comprising a hip-length or three-quarter length jacket with a high neckline and a hood, worn with a matching petticoat.

   • Though I wore only a plain somber gray Brunswick gown unadorned by ribbon or lace, and my uncle was dressed in black, the people knew aristocrats on sight. — 2019