DEAR ABBY: I have an etiquette question. If you aren't supposed to wear white after Labor Day, when can you begin wearing white again? -- DEBBIE IN JONESBORO, ARK.
DEAR DEBBIE: You can wear white whenever the spirit moves you. According to "Emily Post's Etiquette," 17th Edition: "The old rule about wearing white only between Memorial Day and Labor Day is a thing of the past. Today the question of wearing white applies to the WEIGHT of the fabrics, not COLOR. (Italics are mine.)
"Lightweight fabrics in white and pastels are worn in the warm/hot months and heavier fabrics known as 'winter whites' are worn in the cool and cold months. Since the country includes varied climate zones, the times for switching between summer and winter whites will depend on the weather where you are."