To get a sense of how the international glamour pack dress when they travel, we also asked about their in-flight uniforms at a few recent events (the two-day Guggenheim International Gala dinner, made possible by Dior, and the Cinema Society Spectre premiere). On planes and as they march through security, somewhat unexpectedly, the tony revelers claimed they dress as cozy as they can—even the princess. Here are some tips we gathered from the jet set: