THE  POCKET HANDKERCHIEFS AND POCKET SQUARES ARE BACK. Now that formalwear is having a resurgence of popularity, one of the most elegant symbols on men fashion, the Pocket Handkerchief or Pocket Square are back too. Years ago they disappeared from blazers, jackets and tuxedos, but the  new trends are making them come out from oblivion, and we guess they’ll remain for long.  Some designers propose this chic detail for their Fall-Winter/2012 collection. Now the pocket squares are present in different colours, prints and fabrics, so the rules are changing too. But how to recognize Pocket squares from a pocket handkerchief