Christian Gottlieb Schick (1776-1812) – Portrait of Heinrike Dannecker Alte und Neue Nationalgalerie (Berlin)

The picture has something of this: woman, people, portrait, girl, love, two, wear, dress, model, fashion, jewelry, veil, man, retro, sitting, position, sit.
Perhaps it’s a painting of a woman in a blue dress sitting on a ledge with her hand on her chin and her right hand resting her chin.