Every generation freaks out about the appearance of the next. The same dottering prigs who are trying to enforce a no-peaking-underwear rule against today's young people were, themselves, subject to similarly inane fashion-police efforts in their day. It wasn't that long ago that there were rules about boys having long hair and girls having skirts above the knee. Not too long before that, there were rules about "greasers" with their antisocial leather jackets and slicked hair. These stupid reactionary bouts of neopuritanism are as old as time itself. There was a time when the idea of a woman wearing trousers was deeply scandalous, and a time before that when a gentleman who went out in public without a powdered wig might as well have gone out naked.
At least the fools give us something to laugh at. The generation that sported psychodelic clothes and long hair is now clucking like imbeciles at the generation that wears baggy pants, and in twenty years they'll be working hard to get themselves into a ludicrous tizzy about their own children's fashion innovations.