‘The Queen of Scotland and the queen of fashion,” proposed Karl Lagerfeld by way of explaining the ghostly, richly layered Métiers d’Art collection he showed inside the Gothic ruins of Linlithgow Palace, birthplace of Mary, Queen of Scots. Ruffs, cloaks, pearls, and Renaissance sleeves conjured up the rough romance of the formidable Mary, while Queen Coco was invoked by textured tweed jackets, rustic Fair Isle pullovers, and creamy cardigans—haberdashery elements she appropriated from her beau, the Duke of Westminster, when she salmon-fished at his estates in Scotland in the 1920s. But the clothes and accessories (including quilted sporrans and “CC”-emblazoned whiskey flasks) are, above all, references to King Karl himself, who this year marks his 30th anniversary at Chanel. Under his reign, Chanel has purchased many of the embroidery, shoemaking,…