PARIS — The avant garde 1961 classic Last Year at Marienbad holds a special place in Chanel lore. Coco herself dressed the film’s star Delphine Seyrig, and for Spring 2011, Karl Lagerfeld made one of his most memorable mise-en-scènes with a huge set based on its enigmatic monochrome look. Virginie Viard cycled round again to Marienbad on Tuesday with her new collection. She said it was the film’s “sophisticated allure” that drew…