This casual combo of a red plaid long sleeve shirt and light blue jeans is a tested option when you need to look good but have no extra time. You could perhaps get a little creative with footwear and tone down your look by rounding off with a pair of tan suede work boots. This one is a great pick when it comes to crafting a standout ensemble for unpredictable fall weather. Those who are curious how to dress with style well into your 30s, you have your answer.