This relaxed casual pairing of a light blue short sleeve shirt and white chinos is extremely easy to pull together without a second thought, helping you look sharp and ready for anything without spending too much time rummaging through your closet. If you need to effortlessly dial down your look with one item, introduce white leather sandals to the mix. As hotter days set in, it's time for easy and breezy getups like this one. Wondering how to nail casual dressing in your early 20s? This pairing is a perfect example.