The Collaborative International Dictionary of English v.0.48:

Tawdriness \Taw"dri*ness\, n.
   Quality or state of being tawdry.
   [1913 Webster]

         A clumsy person makes his ungracefulness more
         ungraceful by tawdriness of dress.       --Richardson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tawdriness
    n 1: tasteless showiness [syn: flashiness, garishness,
         gaudiness, loudness, brashness, meretriciousness,
         tawdriness, glitz]