Classic T-shirts have proven to be one of the simplest and effective ways for someone to show off their personality. Whether it is a concert tee from a show that you went to last week or an “I [heart] NY” tee from your last trip to the Big Apple, each T-shirt that you buy says a lot about you and the history behind the design. You may not know the history behind all of your favorite shirt designs, which is why we put together this handy infographic. By taking a look you will learn how the yellow smiley face rose to prominence in the 1970s and the political stance taken by the creators of the “Frankie Says Relax” shirt. You will also be able to see just how much popular culture has shaped the T-shirt and fashion industries through their simple and lasting references that fans are drawn to. See these little-known facts and more before putting on your favorite tee and heading out for the day.