We have a daughter [name]Elisabeth[/name] who goes by [name]Ellie[/name] about 50% of the time. We love [name]Penelope[/name] and my husband’s grandmother was [name]Nell[/name]. [name]Do[/name] you think they’re too similar? [name]Even[/name] if they’re just nicknames?
I think they’re fine if they’re just nicknames. [name]Elisabeth[/name] and [name]Penelope[/name], the actual names, are different enough. 
I agree. [name]Elisabeth[/name] and [name]Penelope[/name] sound lovely together. [name]Elisabeth[/name] won’t always be [name]Ellie[/name] and [name]Penelope[/name] won’t always be [name]Nell[/name]. I think it’s fine.
I have to disagree. [name]Elisabeth[/name] and [name]Penelope[/name] are great sisters but [name]Ellie[/name] and [name]Nell[/name] don’t work in the same household.
Thanks for your input!