Mommy of three girls:
When I hear Sage, I think of a very kind and friendly little girl. The name is gentle. It's beautiful. I have known too many Sierras and they have all been stuck-up, so I can't really like that name. Sage is one of my favorites too.
Plus, when Sage is a little older, her name will look really cute in cursive!
Definitely Vivienne! Viva, for short. Posey and Viva sound nicely together. Maybe even Viva as short for Genevieve.
Posey and Viva are adorable. Penelope and Vivienne are beautiful together too. Cute little girls. Beautiful grown-up women one day.