Here are my faves. Which do you like? Any more suggestions?
Novalie
[name]Eulalie[/name]
Léontine
[name]Apolline[/name]
[name]Rosette[/name]
Ophélie
[name]Bijou[/name]
Miette
Inès
Wow, Nameberry doesn’t have a lot of these listed!
I like French names quite a bit. These are my favorites:
[name]Eulalie[/name]
[name]Faustine[/name]
[name]Apolline[/name]
[name]Delphine[/name]
[name]Ana[/name]ïs
[name]Augustine[/name]
[name]Euphemie[/name]
Francoise - I adore this and would use it in an instant if I were French.
Garance
Olivie
[name]Clemence[/name]
[name]Adelaide[/name] ([name]Ad[/name]élaïde)
[name]Aimee[/name] (Aimée)
[name]Alienor[/name] ([name]Ali[/name]énor)
Alvery
[name]Amelie[/name] (Amélie)
[name]Anais[/name] ([name]Ana[/name]ïs)
[name]Antoinette[/name]
[name]Athenais[/name] (Athénaïs)
[name]Beatrice[/name] (Béatrice)
Benedicte (Bénédicte)
[name]Caroline[/name]
[name]Charlotte[/name]
[name]Cosette[/name]
[name]Desiree[/name] (Désirée)
[name]Edith[/name] (Édith)
[name]Eleonore[/name] ([name]El[/name]éonore)
[name]Elisabeth[/name] (Élisabeth)
[name]Emmanuelle[/name]
[name]Euphemie[/name] (Euphémie)
Euphrasie
[name]Fabienne[/name]
Felicite (Félicité)
Francoise ([name]Fran[/name]çoise)
[name]Frederique[/name] (Frédérique)
[name]Gaelle[/name] (Gaëlle)
[name]Giselle[/name]
[name]Heloise[/name] (Héloïse)
[name]Henriette[/name]
[name]Isabelle[/name]
[name]Josephe[/name] ([name]Jos[/name]èphe)
[name]Josephine[/name] ([name]Jos[/name]éphine)
[name]Julienne[/name]
Leonois (Léonois)
Leopoldine (Léopoldine)
[name]Magali[/name]/Magalie
[name]Manon[/name]
[name]Marie[/name]
[name]Margaux[/name]
[name]Marguerite[/name]
[name]Mathilde[/name]/[name]Matilde[/name]
Maximilienne
[name]Napoleone[/name] (Napoléone)
[name]Odette[/name]
[name]Odile[/name]
Olivie
[name]Pauline[/name]
[name]Pierrette[/name]
[name]Rosemonde[/name]
Tatienne
Theodelinde (Théodelinde)
[name]Therese[/name] (Thérèse)
[name]Victoire[/name]
I thought bijou was just a word meaning ‘small but elegant’.
youcantcallitit.com - youcantcallitit Resources and Information. < This is a list of the top 100 names in France from 2006. Thought it might be of interest.
Also, Cosette isn’t used as a name in France. Quotes from Behind the Name comments:
"Although its a good idea not to name your kid Cosette if she’ll ever go to France - it’s the equivalent of saying with sarcasm “poor little rich girl!”
“Josette is a lovely alternative to Cosette, as the French I know tend to react to “Cosette” as Americans might react to the name “Baby” if born by an adult woman.”
Oh, I positively adore French names. I’m working on a project about the Holocaust in school, and I decided to have my character be French instead of [name]German[/name], so I could use the names. I chose [name]Eugenie[/name] [name]Charlotte[/name] [name]Fabre[/name] (main character), [name]Capucine[/name], [name]Giselle[/name] and [name]Edgar[/name]. I tried to find vintage ones, to match the setting. I do wish I was French so my children could have elegant elaborate vintage french names, but I have not an ounce of French blood in me, just Irish and Czech. These are my favorites though,
[name]Eloise[/name]
Rosamonde
[name]Mireille[/name]
[name]Eugenie[/name]
[name]Margaux[/name]
[name]Fleur[/name]
Lotye
[name]Violette[/name]
Isabelline
[name]Isaline[/name]
[name]Giselle[/name]
[name]Capucine[/name]
[name]Eleonore[/name]
[name]Lucille[/name]
[name]Victoire[/name]
[name]Adelie[/name]
[name]Mathilde[/name]
[name]Euphemie[/name]
I like [name]Rosette[/name], Novalie and [name]Leontine[/name] best out of that list.
Opinions definitely are divided on the name. I’ve only met one (French) [name]Cosette[/name] (who was in her fifties), but it’s not completely unseen. I don’t think it’s as much the “poor little nobody” image that makes it unattractive (or unpopular), as it is the fact that it’s not a name that ages very well (it’s too little girly-girly). IIRC it means “petite chose” or “little thing”. Personally I would never use it because of the heavy association to [name]Les[/name] Misérables, but it’s a name that clings well 
I love Léontine!
French Names on My List:
[name]Faye[/name]
[name]Leonie[/name]
[name]Melisande[/name]
[name]Sabine[/name]
[name]Viole[/name]
[name]Constance[/name]
[name]Margot[/name]
[name]Oriane[/name]
[name]Reverie[/name]
[name]Fleur[/name]
[name]Bellamy[/name]
[name]Clemence[/name]
[name]Bijou[/name] isn’t a name? What about [name]Bijou[/name] [name]Phillips[/name]? Lots of names are also words, right?
I like a majority of your list, especially Apolline but I thought you might want to know Miette is not really a French name. It is associated with food and garbage despite the fact that it has been used as a name in literature. I have French friends who can’t even believe someone would name their child this so while it might work in the States if your child ever traveled to France people would think this is a bizarre name choice.
I have to agree with Renrose, I used to hate Cosette and I’ve let up on my stance but in France Cosette is often used in a way to say “quit whining” as in stop being a Cosette and it’s sort of an old lady name. Shvibziks is right, it’s not 100% obsolete but INSEE data shows it hasn’t been used since 2009.
My favorite French names and the ones on my list are in my signature if you’re looking for inspiration. I keep a big database of French names and will try to post some later.
[name]Apolline[/name] is my favorite! [name]How[/name] about [name]Delphine[/name], [name]Jolie[/name], and [name]Elodie[/name]?
[name]Elodie[/name]
[name]Aurelie[/name]
[name]Genevieve[/name]
[name]Clemence[/name]
[name]Amelie[/name]