William "Braveheart" Wallace did battle in it. Queen Victoria decked Balmoral in it. Madonna donned it to strut around the stage. Tartan, the beloved symbol of kin, clan and nation to the Scots, has evolved into the one of the world's favorite fabrics. Serving as inspiration for designers of everything from haute couture to furniture, tartan mania is in full swing. Fashion world insiders Jeffrey Banks and Doria de La Chapelle have written the definitive...