I was going to say... I love winter white. It looks sooo pretty on a lot of people. I wear that color on Christmas sometimes. I have at least 5 white/winter white bags that I use all year round. (well the white for spring/summer and the winter white for fall/winter) I see a lot of people wear white after labor day. I don't think that adage really applies anymore.
Originally, the rule was more along the lines of "Only wear white shoes between Memorial Day and Labor Day." Furthermore, it mainly applied to white pumps or dress shoes. White tennis shoes and off-white boots seem exempt, as are any shoes worn by a winter bride. "Winter white" clothing (e.g., cream-colored wool) is acceptable between Labor Day and Memorial Day too.
The only logical reasoning we could find cited temperature. Image consultant Nancy Penn suggests that because white reflects light and heat, wearing white would make you cooler in winter, and thus should be avoided. But others suggest the rule stems from a class issue. Acting Director of the Museum at the Fashion Institute of Technology Valerie Steele notes that in the late 19th century and the 1950s, more people were entering the middle classes. These nouveau-riche folks were often unaware of the standards of high society, so they were given specific codified rules to follow in order to