There are many different types of t-shirt designs that are popular among people. Some of the most popular designs include funny slogans, interesting graphics, and cute designs. Many people also like to wear t-shirts with patriotic or religious messages. Some of the most popular t-shirt designers include Nike, Adidas, and Converse. These companies create unique and stylish designs that are often very popular among people of all ages. If you are looking for a new t-shirt to add to your wardrobe, be sure to check out some of the latest designs from these brands. You are sure to find something that you love!