The book follows the adventures of Heather Wells (who also later stars in a sequel, Size 14 is Not Fat Either). Heather is a washed-out pop star - robbed by her mother, cheated on by her famous boyfriend, dropped by a label owned by the aforementioned boyfriend's father, living with (and quite in love with) her boyfriend's elder brother...and of course, size 12. Heather is plagued by problems like whether or not walking ten minutes is exercise, how people keep recognizing her randomly without having any idea who she is (or being told 'you look just like Heather Wells') or whether or not her landlord likes her, and by 'vanity sizing' in stores...until, of course, some girls in the dorm she works in start falling down elevator shafts (believed to be doing something called 'elevator surfing') and Heather smells a rat...and then goes straight into the investigation.
As a chick-flick, this book is fine. Cooper makes an adorable hero and Heather makes a heroine who is slightly less annoying than the majority of the heroines of romance books these days, and the entire premise of being a washed up pop-star (while completely unbelievable in so many issues - like how she still talks to her mom who robbed her and fled the country) is fairly interesting to work with. In fact, the book might have been quite passable if this had just been a regular love story of the guy and girl who have issues (like the fact that she's his little brother's ex-girlfriend) falling in love and having a happily ever after somehow. However, this gets mucked up (spectacularly) by the introduction of the so called 'mystery'.
The 'mystery' of the book - of the dying girls - is ridiculously done. Not only is there no suspense built up or any sort of feeling built for the girls who die but the resolution of the mystery is also terrible. The major part of the mystery lasts on a single point that no one even thinks about mentioning until the author suddenly puts it in to explain how in the world her heroine came to a conclusion about the identity of the killer. Also, the motivations of everyone, including the so called 'bad-guy' killer, are absolutely crazy, illogical, and based on some kind of weird perception of the world. In fact, the entire mystery is poorly plotted and seems tacked on rather than a natural evolution from the plot, and in fact it spoils the book completely.
Final thoughts: Reach it for chick-flick value if you like such books. If you're reading for mystery, or really for anything other than passing some time, give it a miss.
Other thoughts: I recently finished American Gods, by Neil Gaiman. Its amazing. Expect a review sometime in the next week. Until then, happy reading. :)