We had my first daughter [name_f]Lilia[/name_f] (pronounced [name_f]LILY[/name_f]-[name_m]AH[/name_m]) just recently and have began thinking of future baby names for her sibling. We’ve pretty much settled between two baby boy names but have struggled with a girl.
What we like so far:
[name_f]Mila[/name_f] {pronounced MEE-LA} (absolutely love this name and my number 1 choice but feel it’s a little too matchy matchy)
M/adeline
[name_u]Evelyn[/name_u]
[name_u]Everly[/name_u] (not 100% with this one because although really nice seems a little too trendy for my liking)
[name_f]Alessia[/name_f] {pronounces [name_m]AH[/name_m]-LESS-EE-[name_m]AH[/name_m]} (one of my favourites, up there with [name_f]Mila[/name_f], but my brother’s name is [name_m]Alessio[/name_m] and although I haven’t talked to him about it, feels a little strange for me to be naming my child.)
[name_f]Michaela[/name_f]
[name_f]Valentina[/name_f] (not my favourite but my mother absolutely adores this name so it’s up here)
[name_f]Julia[/name_f]/et
We would prefer names that aren’t too popular as both my husband and I grew up with fairly popular names and hated it throughout school.
[name_f]Mila[/name_f] feels too matchy to me, sorry! So does [name_f]Julia[/name_f]. [name_f]Adeline[/name_f] and [name_u]Evelyn[/name_u] are quite popular, and [name_f]Madeline[/name_f] used to be, so I’d avoid them if I were you.
I feel like [name_f]Alessia[/name_f] is too close to your brother’s name, though it could work as a middle name.
I love [name_f]Juliet[/name_f], [name_f]Michaela[/name_f] and [name_f]Valentina[/name_f], and [name_u]Everly[/name_u] is nice too!
Instead of [name_f]Mila[/name_f]: [name_f]Mira[/name_f] (mee-rah), [name_f]Myra[/name_f] (mai-rah), [name_f]Mina[/name_f] (mee-nah), [name_f]Millicent[/name_f] “[name_f]Millie[/name_f]/[name_f]Mila[/name_f]”, [name_f]Mirabel[/name_f]
Instead of [name_f]Madeline[/name_f]: [name_f]Magdalene[/name_f], [name_f]Magdalena[/name_f], [name_f]Marceline[/name_f], [name_f]Maren[/name_f], [name_f]Marin[/name_f], [name_f]Marina[/name_f], [name_f]Maxine[/name_f]
Instead of [name_f]Adeline[/name_f] and [name_u]Evelyn[/name_u]: [name_f]Adelaide[/name_f], [name_f]Aveline[/name_f], [name_f]Evelina[/name_f], [name_f]Eve[/name_f], [name_f]Elina[/name_f], [name_f]Emmeline[/name_f], [name_f]Edeline[/name_f], [name_f]Helena[/name_f], [name_f]Josephine[/name_f]
Instead of [name_f]Julia[/name_f]: [name_u]June[/name_u], [name_u]Juniper[/name_u], [name_f]Junia[/name_f], [name_f]Juno[/name_f], [name_u]Jude[/name_u]
[name_f]Lilia[/name_f] and [name_f]Juliet[/name_f] 
[name_f]Lilia[/name_f] &
Elodie
Marguerite
Evangeline
Marigold
Saskia
Marceline
Vivienne
Madelief
Sunniva
Pomeline
Mireille
Aveline
Cecily
Good luck
I like [name_f]Juliet[/name_f] the most!
[name_f]Lilia[/name_f] is beautiful!! Unfortunately I do think [name_f]Mila[/name_f] is far to close for sisters :(. I think [name_f]Madeline[/name_f], [name_f]Adeline[/name_f], [name_f]Michaela[/name_f] and [name_f]Juliet[/name_f]. I love [name_f]Julia[/name_f] but I also think it’s too close. [name_u]Evelyn[/name_u] and [name_u]Everly[/name_u] both are great names however I don’t think either works well with [name_f]Lilia[/name_f]. I’m not a fan of [name_f]Valentina[/name_f] but it could work.
I also love [name_f]Alessia[/name_f] with [name_f]Lilia[/name_f] however I think you should talk to your brother about it first. [name_m]Just[/name_m] curious though: [name_m]How[/name_m] many siblings do you have? Because if you only have the one brother I think you could potentially get away with it. Or you could use it as a middle name. But if you have more, it could potentially look like you are honouring one sibling over the other.
[name_m]Just[/name_m] as a side note, I know two [name_f]Lilias[/name_f] (one is spelt Lileah). [name_f]Lilia[/name_f] has two sisters: [name_f]Meline[/name_f] and [name_f]Louisa[/name_f]. Lileah has two brother [name_m]Cooper[/name_m] and [name_m]Asher[/name_m] :).
I like [name_f]Juliet[/name_f] best from your list. [name_f]Alessia[/name_f] is great too but would seem like you were naming her after your brother.
[name_f]Amalia[/name_f]
[name_f]Aurora[/name_f]
[name_f]Bianca[/name_f]
[name_f]Carina[/name_f]
[name_f]Chiara[/name_f]
[name_f]Dahlia[/name_f] (flower theme though)
[name_f]Elsa[/name_f]
[name_f]Georgina[/name_f]
[name_f]Juliana[/name_f]
[name_f]Roxanna[/name_f]
[name_f]Viviana[/name_f]
[name_f]Zara[/name_f]