You can never go wrong in fashion if you stick to certain rules. Or if you're Kate Moss. Normally, ensembles that appear to be made of aluminum foil and cellophane are not much celebrated. But as with so many things, it's all in the execution and context. First there's the nifty contrast of textures with the crinkly dress and furry Fendi shawl. Then there's the fact that this couture outfit, from Maison Martin Margiela, fits both Ms. Moss and the occasion a celebration of a hipster British magazine founded by her ex-fiancé and baby daddy Jefferson Hack like a glove.