Editor’s Note: Featuring the good, the bad and the ugly, ‘Look of the Week’ is a regular series dedicated to unpacking the most talked about outfits of the last seven days CNN — It began with a bellowing horn. Then out came singer Sam Smith, trudging onto the catwalk wearing a tartan shawl shrugged over a v-neck jumper and a functional codpiece-turned-fanny-pack. On their heads, another ribbon of tartan was twisted with black tulle that, from a distance, resembled a flowing mass of dark knotted hair. Trouserless, Smith’s look was finished off with a pair of towering, tartan platform boots…