The revered Tunisian couturier Azzedine Alaïa died in 2017. He was 82, yet always seemed ageless and timeless. Uninterested in trends or the killing fashion cycle, Alaïa made what he wanted and showed it when he was ready. And he loved black. “I only want black,” he said, sounding very much like Balenciaga. “Black is the most important color for me. It is what I start with when I create a model: it makes the silhouette appear better.” Alaïa’s poetics were shared by the photographer Peter Lindbergh, who was known for his work in black and white, and who died in 2019. The two men understood each other, and often collaborated. This exhibition, directed by Benjamin Lindbergh and Olivier Saillard, explores their shared affinity with shadows and light. —L.J.