Recently, a blue puffer jacket made Maryam Nassirzadeh cry. She was trawling her storage when she found it, searching for things of her own that she could add to an upcoming sample sale she was planning at her store. For Nassirzadeh, who designs clothes and accessories and shoes, preparing for the sale was starting to seem like more than a business obligation. She was approaching it as a spiritual purge. Standing in her lower Manhattan studio, Nassirzadeh unearthed the puffer, put it on, and suddenly, she says, “I was bawling.”