[name_f]Amelia[/name_f] - feminine and classy together
[name_f]Mia[/name_f] - short and sweet
[name_f]Stella[/name_f] - ditto [name_f]Amelia[/name_f] but less common.
[name_u]Ruby[/name_u] - so adorable together.
[name_f]Lila[/name_f] [name_f]Margaux[/name_f] is so princessy - I really like it! [name_f]Lila[/name_f] and [name_f]Maggie[/name_f] actually make a surprisingly good combo for siblings, they’re not a pair I normally see matched together. Some others:
[name_f]Lila[/name_f] and [name_f]Maggie[/name_f], [name_f]Lila[/name_f] and [name_f]Gemma[/name_f], [name_f]Lila[/name_f] and [name_f]Georgia[/name_f], [name_f]Lila[/name_f] and [name_u]Camille[/name_u] are my favourites from your list.
Some other suggestions
[name_f]Isla[/name_f] and [name_f]Bridget[/name_f]
[name_f]Isla[/name_f] and [name_f]Genevieve[/name_f]
[name_f]Isla[/name_f] and [name_f]Bonnie[/name_f]
[name_f]Isla[/name_f] and [name_f]Fiona[/name_f]
[name_f]Isla[/name_f] and [name_f]Margot[/name_f]
[name_f]Isla[/name_f] and [name_u]Florence[/name_u]
[name_f]Isla[/name_f] and [name_f]Poppy[/name_f]
[name_f]Isla[/name_f] and [name_f]Daphne[/name_f]
[name_f]Isla[/name_f] and [name_f]Paige[/name_f]
[name_f]Isla[/name_f] and [name_f]Felicity[/name_f]
[name_f]Isla[/name_f] and [name_f]Maeve[/name_f]
[name_f]Isla[/name_f] and [name_u]Jade[/name_u]
[name_f]Isla[/name_f] and [name_f]Vienna[/name_f]
[name_f]Isla[/name_f] and [name_f]Serena[/name_f]
[name_f]Isla[/name_f] and [name_u]Sage[/name_u]
[name_f]Isla[/name_f] and [name_f]Camilla[/name_f]
[name_f]Isla[/name_f] and [name_f]Greta[/name_f]
[name_f]Isla[/name_f] and [name_f]Blythe[/name_f]
[name_f]Isla[/name_f] and [name_f]Giselle[/name_f]
[name_f]Isla[/name_f] and [name_f]Colette[/name_f]
[name_f]Isla[/name_f] and [name_f]Beatrice[/name_f]
[name_f]Isla[/name_f] and [name_f]Frances[/name_f]
[name_f]Isla[/name_f] and [name_f]Esther[/name_f]
[name_f]Isla[/name_f] and [name_f]Imogen[/name_f]
[name_f]Isla[/name_f] and [name_f]Vera[/name_f]
[name_f]Isla[/name_f] and [name_f]Gianna[/name_f]
[name_f]Isla[/name_f] and [name_f]Cecily[/name_f]
[name_f]Isla[/name_f] and [name_f]Adele[/name_f]
[name_f]Isla[/name_f] and [name_u]June[/name_u]
[name_f]Isla[/name_f] and [name_f]Lillian[/name_f]
[name_f]Isla[/name_f] and [name_u]Juniper[/name_u]
[name_f]Isla[/name_f] and [name_f]Matilda[/name_f]
[name_f]Isla[/name_f] and [name_f]Juliet[/name_f]
[name_f]Isla[/name_f] and [name_f]Jane[/name_f]
[name_f]Isla[/name_f] and [name_f]Harriet[/name_f]
[name_f]Isla[/name_f] and [name_f]Elodie[/name_f]
[name_f]Isla[/name_f] and [name_f]Mila[/name_f]
I adore [name_f]Stella[/name_f] as a sister for [name_f]Lila[/name_f]! 100% gets my vote!
I also really like [name_f]Sophia[/name_f], [name_u]Aria[/name_u] or [name_f]Mia[/name_f]. I feel like those names have the same vibes as [name_f]Lila[/name_f] and flow really good together.
As much as I love [name_f]Ella[/name_f], it’s too similar to [name_f]Lila[/name_f] (same with Stella). I really love [name_f]Amelia[/name_f], [name_f]Georgia[/name_f] and [name_u]Vivian[/name_u] as well with [name_f]Lila[/name_f]. [name_f]Georgia[/name_f] [name_u]Vivian[/name_u] or [name_f]Amelia[/name_f] [name_f]Caroline[/name_f] would be darling.