overdress

from WordNet (r) 3.0 (2006)

overdress
    v 1: dress too warmly; "You should not overclothe the child--she
         will be too hot" [syn: {overdress}, {overclothe}] [ant:
         {underdress}]
    2: put on special clothes to appear particularly appealing and
       attractive; "She never dresses up, even when she goes to the
       opera"; "The young girls were all fancied up for the party"
       [syn: {overdress}, {dress up}, {fig out}, {fig up}, {deck
       up}, {gussy up}, {fancy up}, {trick up}, {deck out}, {trick
       out}, {prink}, {attire}, {get up}, {rig out}, {tog up}, {tog
       out}] [ant: {dress down}, {underdress}]

from The Collaborative International Dictionary of English v.0.48

overdress \o`ver*dress"\, v. t.
   To dress or adorn to excess; to dress too much; to dress too
   formally for an informal occasion. --Pope.
   [1913 Webster +PJC]

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "overdress":
      bedizen, deck out, dizen, doll up, dress up, fancy up, fig out,
      get up, gussy up, prank, pretty up, primp, prink, rag out,
      slick up, spruce up, titivate, trick out, trick up