Vivienne and Imogen ... Too similar?

Are these names too rhymey/matchy/sing songy to be sisters?

It is just the last syllable that quite concerns me, however I am incredibly cautious of avoiding all descriptives that were previously named.

Thanks!

I personally don’t think so. [name]Both[/name] names are beautiful and even though they both end with an “n” sound they overall sound totally different.