A young girl's dress, c1790-1810. Is it? Let's be costume detectives!
0119 Empire / Regency dress with sleeveless Spencer 1805 to 1810 Sewi – BlackSnailPatterns
1810 evening wear by Tadarida on DeviantArt
Evening dress | French | The Metropolitan Museum of Art
French court gown with gold embroidery and green velvet train, ca. 1810-1819. Kent State University Museum : r/fashionhistory
Robe d'été, la mode féminine, l'époque napoléonienne, 1810. Lithographie coloriée de : Le Bibliophile Jacob aka Paul Lacroix Costumes historiques de la France (Costumes historiques de la France), Administration de librairie, Paris,