What is the fine-grained topic of the following text: This custom-tailored charcoal grey wool three-piece Armani 1920's style suit flecked with black and white threads was worn by the character Agent Oscar Wallace portrayed by actor Charles Martin Smith in the 1987 gangster epic “The Untouchables”, starring Kevin Costner, Robert De Niro, and Sean Connery. Only return the topic.
Agent Oscar Wallace's Armani suit in the 1987 film "The Untouchables"