The hottest fashion of the past five plus years is the fitted t-shirt. It is interesting that the biggest jump in t-shirt sales ever was after Marlon Brando wore one on screen in 1951. Not only did he start the fashion of wearing t-shirts, he also was way ahead of his time. It turns out that apparently at that time there were not sized t-shirts. The wardrobe department washed and dried a shirt a few times to intentionally shrink it, and then they cut the back and sewed it together for it to be tighter. Brando was way the hell ahead of his time.