September 30, 2008Q: When is it too late to wear a white cotton suit?  What if it is still warm at the end of September?--Ben

We've previously set rules on white jeans (which were then copied by GQ's Style Guy in the July 2008 issue).  The window for a white cotton suit is quite a bit smaller.  Unless you're south of 26 degrees North latitude (about Ft.  Lauderdale, FL), a strict Memorial Day-Labor Day rule is enforced.