The Collaborative International Dictionary of English v.0.48:

Layette \Lay*ette"\, n. [F.] (Med.)
   The outfit of clothing, blankets, etc., prepared for a
   newborn infant, and placed ready for use.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

layette
    n 1: kit consisting of a complete outfit (clothing and
         accessories) for a new baby