This edgy combination of a dark green floral short sleeve shirt and black ripped skinny jeans is extremely versatile and really apt for whatever's on your errand list today. A pair of brown leather chelsea boots effortlessly kicks up the wow factor of your outfit. This getup isn't a hard one to pull together and it's summer-friendly, which is important when it's baking hot outside. Those who wonder how to pull off cool casual outfits as you go through your 20s, you have your answer.