This casual pairing of a tan cable sweater and charcoal sweatpants is a never-failing option when you need to look dapper in a flash. Go down a more casual route on the shoe front by finishing off with a pair of high top sneakers. When it's one of those dull fall days, what better to brighten things up than a seriously stylish ensemble like this one? Those who are curious how to dress stylishly and look good as you go through your 20s, you have your answer.