Source : Webster's Revised Unabridged Dictionary (1913)

Dressy \Dress"y\, a.
   Showy in dress; attentive to dress.

         A dressy flaunting maidservant.          --T. Hook.

         A neat, dressy gentleman in black.       --W. Irving.

Source : WordNet®

dressy
     adj : in fancy clothing
     [also: {dressiest}, {dressier}]