Fashion illustrationists are artists in their own right. A few are self taught but most went to institutions like Central St. Martins to learn not only drawing but the art of design to incorporate into their own art. They are highly sought after by fashion magazines for their sketches. My favorites are Hayden Williams, Arturo Elena, Nuno Da Costa and Inslee Haynes.
I hope to post images and bios of these 4 over the next few days!!!