They have the power to add a pop of color to an otherwise plain outfit, tame unruly hairstyles, or even to add a layer of warmth. Scarves really began to soar in popularity in the 20 th century. Prior to that, women often wore shawls essentially larger versions of scarves. These were most popular during the 19 th century, and dipped in and out of favor according to changes in popular silhouette. Mary Crawley in Downton Abbey wears a skinny jacqmar scarf 1940s 1950s vintage knotted to the side of her neck. The scarves of the s were either slim, skinny styles tied about the neck or hair, or the larger shawl variety.