Miuccia Prada does it. Rick Owens did it after his show on Thursday — or at least about one woman in particular: Marlene Dietrich. She was, he said, the source code for his thinking about “behavior during wartime” and how that might look: like glamour-puss vagabonds after the apocalypse in strapless columns of Kevlar or dangling fringe, mastodon coats made of longhaired goat hide and sequin-festooned platform boots.