It's feathers all the way within the guarded, gilded salons of High Fashion, where one dress can cost £3,000. A puff of plumes, a shimmer of sequins, a knock of naked knees as the waist-makers and swishbucklers prepare to change the Shape of Woman... the autumn sleeves drift by the catwalk in the most frenzied weeks of the year: the Winter Collections, when Paris provides "the look a woman must have to seduce."