Are they too similar?

For a sister sibset, is [name]Isla[/name] and [name]Tallulah[/name] too close in similarity?

No, why would they be?

Am worried about the nickname mostly… [name]Isla[/name] would be paired with [name]Lula[/name] (nn for [name]Tallulah[/name]). And maybe [name]Isla[/name] and [name]Lula[/name] are too close… Strangely I feel ok with this however.

The only way I can see for them to be too similar is the [name]AH[/name] sound in there, but I think it’s okay.