I know everyone says she's white but everybody has to have an ethnic background...if so what is it?
It seems people are confusing the word "race" with the term" ethnicity"...her "ethnicity" is American, but if you're looking into her background, you're looking for grandparents and beyond - in other words, where her ancestors originally came from. The problem with this, is that it's not really public information.
Greene is a British surname. Her full name is Ashley Michelle Greene. I looked at several sources, but none give her ethnic background