Wear something loose or loose, and never wear anything slim. Let me suggest a ratio for you. Chest relaxation should be at least 12 cm. If it is smaller, it will be rejected. Pants should also be loose, but it is much more difficult to cut out a good version of casual pants than a shirt. Without trying several versions, it is difficult to determine the one that suits you. Choose a moderate one. I'm just like you. Personally, it is not good to be too thin or too loose. You can refer to it