PARIS — The Cold War may be over, but the cossacks are still coming…to Louis Vuitton this season. That’s right. Marc Jacobs’s fall collection for the house had a Russian theme, but he didn’t take it to extremes. Instead, he showed shapes that were small on top and full-skirted, with little jackets that flared slightly at the hips. Here, his Moscow maiden. For more on the shows, see pages 4 to 7.