Overdresses like the Lilou model originated in the medieval layering system of clothing, where a simple cotte (underdress) was often worn over a sleeveless or loose-fitting outer garment such as a surcoat. In the High and Late Middle Ages, these garments served both to protect the undergarments and to represent social status. Today, the Lilou overdress is ideal for medieval markets, historical reenactments, LARP events, or costume parties.