A navy plaid long sleeve shirt and white jeans are absolute menswear must-haves that will integrate nicely within your current casual arsenal. Finishing off with dark brown suede chelsea boots is the most effective way to add an extra dimension to your getup. When leaves are falling down and autumn is in full swing, you'll appreciate how great this look is for transitional weather. This pairing demonstrates that looking fashionable as a 30-something Millennial guy is not that hard.