Inappropriate office attire has become the scourge of modern fashion. "People want to be comfortable," said Diane Schwartz, an image consultant. "But you've still got to dress for business first."
  But how do you combine cool, casual comfort with a sharp business vibe? That question has been giving headaches to bosses ever since "dress-down Friday" and "businesscasual" entered the lexicon in the early 1990s.
 Almost two decades later, "businesscasual" is still a misunderstood and much-abused concept. "Casual" has become "sloppy," and business leaders have had enough.
  Dress codes are being rewritten...