Let's see... in jr high/high school I was a 'punk' kid with a pink mohawk and ripped up clothes.
Senior year of high school, I started dressing like a 50's housewife and continued that for many years. Of course, I added some color to my arms and back by the way of tattoos
People go with the 'trends' they like. I myself like the rockabilly/psychobilly look and lifestyle, while others may like preppy and still others like that dirty rockstar stuff. I have friends that are in their early 20s and look like they came out of the 60's with their hippie attire and attitudes, I also have a friend who is 27 and absolutely will NOT leave the house without a tie on.
People are strange and people are different, that's what makes life so fun!