I think the most obvious suggestion is Charlotte but I don't like Charlotte.
It might sound a little out there but I like the name Charlemagne. Not sure if the name Charlie really matches as a nn though. Honestly, I think Charlie is fine by itself. I don't like how there aren't really any full names (that I can think of) with the harsh 'ch' sound that Charlie has. Charlie doesn't really work as a nn on a girl, I'd just name her Charlie.
Edit: Charlemagne is a masculine name but I like it on a girl.
This message was edited 3/19/2013, 6:43 AM