You are about to read my UTTERLY BIGGEST SECRETS. Can I trust you? OK then, I'm Ella, and this is my diary. The Ella Diaries series explores the real issues girls face at school and home. Ella is resourceful, caring and real, and the writing is sharp and funny. With the requisite doodles, pros and cons lists, and just the right amount of snark, each book is it's own juicy diary. For girls 8 to 12.