No. It is definitely not suitable for an 11 year-old. There is so much sex, sleeping around, betrayal, scandal, it is far too dark/scandalous and horrible for someone that young. I think you should give the books to older teenagers such as 17,18, 19 year olds who'd appreciate the genre better and be able to relate to them. All the characters are really egoistical and all they are concerned about are looks, sex, boyfriends, and how popular they are.