The name Lucienne is a girl's name of French, Latin origin meaning "light". Lucienne and is often added to lists like Best Cool Unusual Girls' Names and discussed in our forums with posts like "What would be the perfect twin?".
From the experts:
Lucienne is a soft and ultra-sophisticated French-accented option in the Lucy family, one that could provide a fresh alternative to such fatigued Gallic choices as Danielle and Michelle.
So if you're looking for a more elegant take on Lucy, this could be it. The original male Lucian is a Latin name while Lucien is the French form and Lucienne is a female spin on that.