Reach for a dark green print crew-neck t-shirt and light blue ripped jeans if you're on a mission for a look idea for when you want to look casually cool. And if you need to immediately up the ante of this outfit with a pair of shoes, why not complement your outfit with black suede tassel loafers? Those who are curious how to look fashionable as you work your way through your 20s, you have your answer.