I'd say this is a pretty simple one, but I still need some help from the brilliant PB minds!
I need a girl who can pass for seventeen. Very, very smiley and enthusiastic looking. And cute! But she also needs some faces where it looks like she's thinking. If anyone's curious, the character is a human interpretation of the robot Sumomo from Chobits. But the looks don't have to be the same.
Any ethnicity other than African American will work, mostly because I just don't think an African American face would fit this particular character.