Thank you! I’ve never thought of it being a masculine name…I just don’t know any male Vivians, however, I know they are out there. I do want something really “girl-y” though. I appreciate your opinion!
I prefer [name_f]Sylvie[/name_f] 
I adore [name_f]Sylvie[/name_f] so she would have to get my vote! [name_u]Vivian[/name_u] has a more formal feel but still a very sweet vintage gem of a name.