The Collaborative International Dictionary of English v.0.48:

lavalava \la`va*la"va\ (l[aum]`v[.a]*l[aum]"v[.a]), n.
   A printed cloth garment resembling a skirt or kilt, worn as
   the principle garment by both men and women in Polynesia,
   especialy in Samoa; called also pareu.
   [PJC] lavallier
   lavaliere

WordNet (r) 3.0 (2006):

lavalava
    n 1: a skirt consisting of a rectangle of calico or printed
         cotton; worn by Polynesians (especially Samoans)