"Greed for lack of a better word....is good" was the famous phrase Gordon Gekko uttered....which seemed to sum up the film, his wardrobe throughout the 120+ minutes and also of the powerful Wall Street executive in the excess of the 1980's. His personality was aggressive and his wardrobe did the job of reflecting his high ranking position, taking style nods from Europe and making it American, all the while easily making banker shirts and suspenders cool and chic.
NBA coach Pat Riley certainly took notes from this film and felt the Gekko effect. In the late 1980's and early 90's, slicked back hair, fine Italian suits courtesy of Gianni Versace set a new standard, similar to how Tom Landry and most American Football coaches pre 1970's donned their best threads on the sidelines.
Michael Douglas is reviving the Gekko character for the sequel "Wall Street 2: Money Never Sleeps", and even 22 years later, my money goes against him losing his stylish and detailed step.