Legend has it…you don’t wear white after Labor Day because rich people wore white.
During that whole Gilded Age the late 1800s, wearing white was a symbol of money. The story goes, laborers who couldn’t afford a ‘vacation’ were busy working in New York City and wearing black, drab suits. While on summer vacation, the filthy rich would wear white to distinguish themselves from the working class and show off the privileges. Then came the Great Depression, opening the door to the working middle class. Now, everybody could wear white!
The other reason, could be practicality white best reflects heat. With that said, Labor Day is the official end of summer and cold weather is on the way.
Then there is my dear sweet mother, who said, “Diane you shouldn’t wear white after Labor Day. It doesn’t look right.”