The Collaborative International Dictionary of English v.0.48:

Wearer \Wear"er\, n.
   1. One who wears or carries as appendant to the body; as, the
      wearer of a cloak, a sword, a crown, a shackle, etc.
      [1913 Webster]

            Cowls, hoods, and habits, with their wearers,
            tossed,
            And fluttered into rags.              --Milton.
      [1913 Webster]

   2. That which wastes or diminishes.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wearer
    n 1: a person who wears or carries or displays something as a
         body covering or accessory; "the wearer of the crown"