The name Lilou is a girl's name of French origin meaning "lily". Lilou and is often added to lists like Unique Baby Names: Unusual and Rare and discussed in our forums with posts like "Names on NB that make you go WOW!".
From the experts:
Lilou is a charming, rarely heard import. Occitan is a language spoken in Provence, in the south of France, in which the suffix "ou" denotes a pet form — thus, Lilou as a short form of Liliane or its Occitan form Liliana or Liliano. Its popularity in France--where it's currently Number 12--can be traced to the 1997 film The Fifth Element.
Pronounced lee-loo, this is an enchanting option.