houppelande
An outer garment worn by men and women in the late middle ages, originating in France. It's long, full body with flaring sleeves, sometimes lined with fur. The edges are often dagged, or cut into decorative patterns such as scallops, "embattled" tabs or even leaf shapes. Traditionally, the women's is always floor-length, while men's could be of any length.
In England, it was mockingly called a goun. In Italy, it was called a pellanda. The garment has survived as academic and legal robes of today.