Soleia

Surprising that this had to be user-submitted. It works just enough better than "Soleil" as a name that you'd think it'd be a more common, "standard" one (and recognized by spell-check!) The only thing is that you have to drop the L in order to not just be adding "So" onto Leila/Layla, but you can get used to that quickly enough. It's also like "so" in front of Leia, which is cool, since that name's really only ever been known for the character.