For a goofproof casual option, you can always rely on this pairing of a white and blue vertical striped dress shirt and blue jeans. And if you wish to easily dial down this outfit with a pair of shoes, why not add a pair of white canvas low top sneakers to your getup? So as you can see here, it's a a seriously stylish, not to mention season-appropriate, combo to keep in your transitional sartorial arsenal.