To achieve an authentic Victorian gentleman's look, start with a three-piece suit featuring a frock coat (early period) or sack coat (later period) with matching waistcoat and trousers in dark, solid fabrics or subtle patterns. Add a white shirt with a high collar, a cravat or necktie, leather boots or Oxford shoes, and appropriate headwear (top hat for formal occasions, bowler for business). Authentic accessories include pocket watches with chains, walking sticks, gloves, and facial hair styled according to the specific decade you're emulating.