The Collaborative International Dictionary of English v.0.48:

Womanliness \Wom"an*li*ness\, n.
   The quality or state of being womanly.
   [1913 Webster]

         There is nothing wherein their womanliness is more
         honestly garnished than with silence.    --Udall.
   [1913 Webster]

WordNet (r) 3.0 (2006):

womanliness
    n 1: the trait of being womanly; having the characteristics of
         an adult female [syn: womanliness, womanlike]