The Great Gatsby finally opened this weekend, and did a pretty boffo box office (although it got some mixed reviews). But no matter what you thought about the film overall, no one can argue it wasn't visually stunning. The combination of sets, costumes, hair and makeup all made for a gorgeous two and a half hours. We already spoke in depth with costume and set designer Catherine Martin, but we wanted to hear all about the film's incredible 1920s hair styles too. Kerry Warn, the film's hair designer, was on-hand to answer all our burning questions. Read on.