What if Harry Potter had a twin sister - Jamy Potter? And what if Jamy was the famous one? The one with the scar? What if Lily was American, the Dursleys didn't exist, and Lily had two sisters - twins? What if Neville Longbottom was really Lucas Camden, Sirius had a son and Remus had a daughter? This is a complete AU about the life of Jamy Potter, her brother and their friends at Hogwarts. Some extra stuff happens in addition to what happens according to the books.