The witching hour is almost upon us and the looks on show are decidedly dark  and gothic. With Kristen Stewart and Daphne Guinness as muses, along with the high interest in Twilight sequels and all thinks vampire, there is a real fashion interest in the dark side. Leather, lace and heavy velvet in every shade of blue (midnight of course!) and black are all over the High Street and catwalks. So embrace a bit of black magic and make this Halloween the most spooky, and yet most stylish ever. Poster girls for Gothic Glamour. Here are some of the  key picks for the Halloween trend. This Miss Selfridge maxi dress…