girlishness

from WordNet (r) 3.0 (2006)

girlishness
    n 1: being characteristic of a girl

from The Collaborative International Dictionary of English v.0.48

Girlish \Girl"ish\, a.
   Like, or characteristic of, a girl; of or pertaining to
   girlhood; innocent; artless; immature; weak; as, girlish
   ways; girlish grief. -- {Girl"ish*ly}, adv. --
   {Girl"ish*ness}, n.
   [1913 Webster]