The Addams Family (movie version, though the TV series came first). Other films that would make good Hallowe'en costumes because they're famous, though not really "fashion": The Munsters (similarly, a TV show first), scI-fi (Barbarella, Star Trek, Star Wars, The Rocky Horror Picture Show), fantasy (Mary Poppins, any Disney animation), Rocky, Shaft, Tom Cruise in "Risky Business", Men in Black.
Addams Family Musical. This image made me remember back to the times when I performed under stage lights. They washed out a lot of colour. I find that the colours need to be really bold and bright and intense for the lights to capture and project it. I was looking at these muted costumes and wondered what colour they would have to be to produce this off white shade.