To find the perfect haircut for Chalamet, Gattabrusi looked at portraits of drug addicts and other disenfranchised individuals. He eventually stumbled upon a photo by New York City documentary-style photographer Michael Joseph, which featured a man with the retro hairstyle. "I found this guy that had a mullet that was actually perfect for the period," he says. "This became the point of the inspiration of this character."
When it came time for the big chop, Gattabrusi says he paid special attention to Chalamet's bone structure and head shape so as to create the most flattering cut. "When I did the haircut on him I was looking for the right geometric line for his head and his face," he says. "A geometric haircut makes for a really strong image."