This casual combo of a navy and white polka dot long sleeve shirt and navy jeans is a solid bet when you need to look casually stylish but have no time to dress up. Infuse an extra dose of style into this look by rounding off with brown leather brogues. So when summer is done and autumn is taking its place, you may find this getup your uniform. So if you need style ideas on what to wear as you move into your 40s, this ensemble is a good example.