Yellow silk evening dress, 1817, Leeds Costume Collection
Morning dress, printed cotton, 1815-18, British.
Dress, cotton, 1810-15, probably French.
Dress, materials not listed (appears to be fine cotton or linen embroidered with silk), 1807-10, Italian.
Cotton print bib front dress, c.1810 (via Regency Clothing at Vintage Textile: #7377 Regency cotton dress)
Dress, 1800, Portugal (via Pinterest)
The Metropolitan Museum of Art
British silk dress circa 1800 (via The Metropolitan Museum of Art - Dress)