Jazz Tangcay Artisans EditorCostume designer Jacqueline Durran pored over countless images of Princess Diana to get a feel for her clothing and style before meeting with “Spencer” director Pablo Larrain.Durran, whose credits include “Atonement” and “Little Women,” grew up in the U.K and remembers that though Diana was a style icon to many, her look wasn’t admired in the same way as Kate, Duchess of Cambridge or Meghan Markle.