This smart casual combination of a brown overcoat and black chinos is very easy to put together without a second thought, helping you look seriously stylish and prepared for anything without spending a ton of time combing through your wardrobe. If you want to break out of the mold a little, complete this ensemble with navy and white canvas high top sneakers. So if you're looking for an outfit that's dapper but also entirely season-appropriate, this one fits the task well. Those who wonder how to stay stylish as you head into your 30s, you have your answer.