1. Clairvoyance: Know what you want and discover your true style. The basic casual t-shirt is not that basic. There are round neck tee’s, t-shirts with V necks, U necks, tee’s with deep V necks, deep U necks, crew necks, tight crew necks, loose crew necks, not to forget, variations in designs and cuts: slim, regular…Fabric plays an important part too. Cotton, blended, stretch, no stretch. Then, of course, the sleeves. Long sleeves or short sleeves? Full sleeves or three-quarter sleeves? Boxy sleeves or slim sleeves? With so many options, it is important first and foremost to figure out what you like. What you are comfortable with and what will make you feel confident.