In DC, wave caps never went out of style.
The Chinese Slippers came and went last Spring.
Among men, dreadlocks are more popular now than they were five years ago.
That's all I really know....my kids wear uniforms, and when I go out, everyone looks the same as they did a few years ago, mostly.
Except, I have a sinking feeling that party shirts are going to come back in style in the next five years.