Opt for an olive plaid long sleeve shirt and navy chinos to achieve a day-to-day outfit that's full of style and character. You could perhaps get a little creative on the shoe front and complete your look with brown leather casual boots. This combo is a viable pick if you're crafting a killer outfit that will take you from summer to fall. Wondering how to master casual looks as you move into your 30s? This pairing is the perfect answer.