You and I would call it a dress, but in medieval society this would be considered underwear which the dress is worn on top of.

Prompt: masterpiece, best quality, very aesthetic, absurdres, anime style, 1girl, brown hair, (dog ears, dog tail), yellow eyes, dress, medieval, village, smile, looking at viewer, turnshoe, fluffy hair, long hair, dog ears that are floppy at just the tip, brown tail that is curved and white on the underside Model: Nova Anime XL - Illustrious v16