I spend a fair amount of time in Europe, and I agree that the clothing styles have converged over the recent years. In Austria and Germany the kids often wear skater clothes and similar jeans and sneakers.
I agree with the comments about American women. One also sees a number of older men with the following: grandpa jeans or cargo shorts, plastic baseball hats that often feature the ship on which the wearer served, the ubiquitous white vinyl sneakers, and white tube socks. Many often look lost