My 7 year old daughter is a good, but reluctant reader. It is hard to find books she will willingly read. This book was one of the few she reads over and over again. The reading level is probably too low for her and it doesn't push her reading skills very much, but at least she's reading! I would definitely recommend.
By Char age 6: I liked Ling and Ting (Not Exactly the Same) by Grace Lin. The sister's haircut part was funny. They were fun, cute sisters. It was interesting that one of them ate with chopsticks. I loved how the sisters liked each other.
My first and second grade readers really enjoyed this book. Several times they laughed as they encountered the antics of Ling and Ting. Even though this was a 3rd grade level book, my students still could read most of the words and got the meaning of the stories inside. I like how one story built on the other. My twin 1st grade female students were especially excited that this was a book about twin girls.