NEW YORK — What’s behind the recent blouse revival? Probably a number of factors. The whole fascination with the Seventies, for instance, and let’s not forget Miuccia Prada, who conjured up images of Faye Dunaway in the film “Network” with boss-lady blouses last season. Now, for fall, everyone is following her lead with fresh takes on the look. Here, Ghost’s embroidered silk blouse with paillettes and Iza’s cotton and Lycra spandex denim pants. For more, see pages 6 and 7.