This is from Wikipedia:
http://en.wikipedia.org/wiki/Labor_d...fter_Labor_Day
"An old custom prohibits the wearing of white after Labor Day. The custom is rooted in nothing more than popular fashion etiquette.[1] In actuality, the etiquette originally stated that white shoes were the taboo while white or "winter white" clothes were acceptable.[2] This custom is fading from popularity as it continues to be questioned and challenged, particularly by leaders in the fashion world. "Fashion magazines are jumping on this growing trend, calling people who 'dare' to wear white after Labor Day innovative, creative, and bold. Slowly but surely, white is beginning to break free from its box, and is becoming acceptable to wear whenever one pleases. This etiquette is also compared to the Canadian fashion rule of not wearing green after Rememberance day. "[3]"
This article cites another web article which I think sums up the rule
perfectly:
"We can only surmise that the point of this rule is to ensure that people only wear summer fashions during the actual summer months. The opposite probably applies as well, but people generally don't need to be reminded to avoid wearing a goose-down parka in 100-degree weather."
I know a lot of people in the fashion industry and white is perfectly acceptable to wear right now. Should you wear white linen pants when it's 60 degrees? I would vote no. A high fashion mod white dress, I vote YES!