Go for a simple but at the same time casually stylish option in a tobacco long sleeve shirt and jeans. Complement your look with a pair of black leather oxford shoes to immediately step up the fashion factor of this outfit. So as you can see, it's a cool, not to mention spring-ready, outfit to have in your transitional rotation. Wondering how to nail classic and casual dressing as you drift through your 20s? This combination is the perfect answer.