A fashion-motif of the 18th century is the so-called robe à la française that developed out of French courtly dress, and which comprised a hoop-petticoat, narrow waist, and loosely falling train at the back. The multipart gown consists of an overcoat-like manteau, open at the front; a skirt, or jupe, worn underneath; and over the top, as desired, an interchangeable decorative stomacher. The décolleté and half-length sleeves were inset with lace, which unfortunately very seldom survives in the original. (text from Treasures of German art and history)