As the largest ever retrospective of Irving Penn’s photography opens at The Metropolitan Museum of Art, his collaborators — including Phyllis Posnick, Issey Miyake, Polly Mellen, Marisa Berenson and Julien d’Ys — remember his greatness.

Phyllis Posnick's visually-arresting images have defined her three-decade career. As her archive of work is compiled in a book, the stylist talks to Tim Blanks about her years at Vogue and working with Irving Penn.