Best book to teach a 7th grader about the world of anthropology?

My sister is a 7th grader with a higher than average reading level and a strong desire to learn about her interests. Right now she's saying she wants to be an anthropologist when she grows up - which I can totally see! Her birthday is coming up and I want to get her a book that would introduce her to the world of anthropology in detail. Having taken intro to anthro a few semesters ago, I know how vast it can be and I would give her my textbook from that class but I feel the details are just too heavy for her right now. Basically, does anyone know of an "intro to anthro textbook for 7th graders"?