Anyone want to guess what the media would be saying if a young, stylish Republican President and his wife were in office? I remember the media criticism of Nancy Reagan's high-fashion in the 1980s. It didn't exactly play like this: Under Obama, D.C. turns fashionable Washington, D.C., might not be ready to overtake New York, Paris or Milan as a fashion mecca, but with a stylish first couple as its best ambassadors since the Kennedy era, the sartorially challenged seat of power in sensible pinstripes is finally getting a little respect. Fashion observers credit the change to new Vogue cover...