Effortlessly blurring the line between cool and off-duty, this pairing of a dark brown camouflage long sleeve shirt and white jeans can easily become your go-to. In the footwear department, go for something on the more elegant end of the spectrum and finish this ensemble with a pair of brown leather casual boots. If you've reached your 30s, take cues from outfits like this to take a more serious direction in your style.