This casual combination of a white crew-neck t-shirt and jeans is extremely easy to throw together without a second thought, helping you look awesome and ready for anything without spending a ton of time combing through your closet. If you need to effortlessly perk up this ensemble with shoes, why not complement your outfit with dark brown boat shoes? You know when it's super hot outside, sometimes only a neat outfit like this one can get you through the day. Ideal if you're looking for some amazingly inspiring casual style for 20-year-old guys.