If you want classic look, then double breasted suit is what you need. It's the oldest suit design that I know. Double breasted suits are worn from 1930's and they become fashionable nowadays. What means double breasted suits? Double breasted suit jackets typically have one to four rows of buttons (each row containing two buttons), one or two of the rows functional – the others are decorative and they're just used for classic look.
These jackets have two layers overlapping. The original double-breasted jacket has six buttons, with three to close. These suits look better on taller men, so that long torso of man can be viewed. Double breasted suits can be striped, plain or plaid and can be made of different materials.