My daughter is 53" and weighs 58lbs. She will be 9 in August. She is on the thin side. I have a very hard time buying jeans for her, to get the length correct, they are too big around the tummy. I have never worried about her weight and maybe I may never have to, she hardly eats, but she does love her chocolate! I just never considered weight a concern, I hoped she wouldn't ever have to worry like I do.