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.
"Risky Business" (1983). COUNTRY: United States. DIRECTOR: Paul Brickman. CAST: Tom Cruise, Rebecca de Mornay, Joe Pantoliano, Richard Masur, Bronson Pinchot, Nicholas Pryor, Janet Carroll, Curtis Armstrong