I think
Sylvia is a beautiful name, though I prefer
Sylvie at the moment.
I'm surprised
Sylvia hasn't gotten more popular. It seems of a piece with other popular names at the moment.
I think there are two ways to go with
Sylvia. You can play up its sort of seriousness:
Sylvia JaneSylvia EleanorSylvia LouiseSylvia MarySylvia FrancesSylvia HelenSylvia MargaretSylvia Charlotte
or you can play up its flowy-ness
Sylvia LaurelSylvia MadeleineSylvia MargotSylvia VioletSylvia RosalindSylvia CamilleSylvia BeatriceSylvia Emmeline
______________________________________________________________________