Fashion web sites, including the sites for the large brands, are just as bad as restaurant web sites. Which is even more embarrassing for an industry that's so inherently visual. Even fairly successful fashion labels will have terrible, flash-based sites with autoplay music and (often) out-of-date content, because it's too expensive or too much trouble to update the site (which probably was built lacking any kind of real back-end CMS.)
Actually, they are making changes. createthe has been transforming some high end brands towards HTML5.
Thing about fashion is that it's more about brand than usability. They get a lot of their sales from their boutiques, net-a-porter, or other 3rd parties.