When I see people in their teens and 20s, I tend to see them with their top buttons fastened without a tie. I see this on everything from nice french cuff dress shirts, to casual button-downs, to polos. Now, I know that you are technically are not supposed to do that, but I've also seen in TV shows, movies, pictures, and clothing ads from the 30s to the 50s with men in polos, button downs, and dress shirts with the top button fastened. So does this mean we are reviving a trend from the mid 20th century?