The Collaborative International Dictionary of English v.0.48:

Silk-stocking \Silk"-stock`ing\, a.
   Wearing silk stockings (which among men were formerly worn
   chiefly by the luxurious or aristocratic); hence, elegantly
   dressed; aristocratic; luxurious; -- chiefly applied to men,
   often by way of reproach.

         [They] will find their levees crowded with
         silk-stocking gentry, but no yeomanry; an army of
         officers without soldiers.               --Jefferson.
   [Webster 1913 Suppl.]