Maison Schiaparelli was a haute couture house founded by avant-garde Italian fashion designer Elsa Schiaparelli in 1927. The original house went bankrupt in 1954, and Elsa founded a perfume company, Elsa Schiaparelli SA, in 1957. From Wikipedia
The couple stepped out together for the first time at the David di Donatello Awards, where Chalamet was honored for Cinematic Excellence.