When did suits fall out of fashion?

By 1985-1986, three-piece suits were on the way out and making way for cut double-breasted and two-piece single-breasted suits. The late 1990s saw the return to popularity of the three-button two-piece suit, which then went back out of fashion some time in the first decade of the twenty-first century.

Did men wear suits in the 50s?

Even though men no longer wore formal business suits outside of the office, they still wore suit coats that mimicked the design. Sport coats and blazers had the same 1950s natural shoulder, straight hanging fit, two-button single breasted fronts, and flap pockets with side vents.