To wear this shirt, simply put it on like you would any other shirt. You can pair it with jeans for a casual look or dress pants for a more dressed - up appearance. When it comes to care, machine wash it in cold water with similar colors to keep it looking its best. Avoid using bleach as it may damage the fabric. After washing, tumble dry on low to prevent shrinking. As for sizing, always refer to the size chart provided as different suppliers have different sizing standards. If you're unsure about your size, it's a good idea to measure yourself and compare the measurements with the size chart. This will help you find the perfect fit.