I have always thought
Sophie is cute, but it is extremely popular here (with both people and pets), moreso than even
Sophia (bilingual English/French speaking area). So yeah, it's pretty boring and safe to me...common to the point of mundane, unfortunately. Have you considered
Sylvie, a more unexpected choice with a similar feel? I adore
Sylvie!
But, if I *had* to use
Sophie, I would spice it up like this-
Sophie ClementineSophie MireilleSophie Melisande Sophie MillicentSophie ClothildeSophie LaviniaSophie LucindaSophie Lucienne Sophie Marcela...