Why not choose a white and black vertical striped long sleeve shirt and navy corduroy chinos? As well as super functional, both items look amazing paired together. Feeling bold today? Jazz up your look by slipping into a pair of white athletic shoes. Rest assured, this combo will keep you toasty as well as looking dapper in this weird fall weather. Those who wonder how to wear modern casual outfits as you move through your 20s, this combination should answer your question.