Why aren't people supposed to wear white on or after Labor Day?

Question

Why aren't people supposed to wear white on or after Labor Day?

Answer 1

It's an old rule.

That was a rule the "old blood" high society types made up in the 1920's. There was this huge rush of "new rich" people who had no idea how to act in high society. They made up the rule about not wearing white because summer clothing was often white, and these clueless "new rich" people would wear clothing out of season, which was considered crude. A whole lot of other rules like that were made up, but I think it's the only one to survive to the present day.

Answer 2

So the fashionistas could finally sell clothes with color in them?