MY FAVOURITE BOOK:
The Mortal Instruments
People have plenty of different opinions on the success of the movie and television portrayals, though most people agree that the first book is great. I am currently re-reading the entire series and it makes my girly heart squeal. Except the sibling thing, that's just weird.
The Princess Diaries - The first Princess Diaries is a classic and you can't not love the characters. Anne Hathaway is wonderful as Mia. This story shows the best and worst parts of growing up with the added weight of a tiara and some really mean girls.