Heather Wells returns to the page in SIZE 12 AND READY TO ROCK. Heather has adjusted fairly well from being a pop star to losing her career, boyfriend and tiny figure. Heather is now unofficially engaged to private investigator Cooper Cartwright, is the assistant director for a dorm at New York College, a size 12, and quite happy. That is until she is called into the dorm one summer night by security reporting there was a 911 call that there is someone unconscious and in need of help. While investigating Heather and Cooper find his brother Jordan and new wife Talia at the heart of the trouble.

Heather and Cooper find Jordan and Talia filming for their reality show and Talia is covered in blood. It seems earlier that night someone shot Talia's bodyguard and the young pregnant newlywed pop star appears to be in shock. Heather may not love Jordan anymore and may not be friends with Talia anymore since she found her cheating with Heather's ex, Jordan but she wants to help. Funny enough Talia is comforted by Heather alone and when she needs a safe place to have her teenage rock camp she begs Heather to allow them to move it to Heather's dorm.

Cooper has been estranged from his father since he refused to join their entertainment company but Cooper can't turn down his request to become Talia's bodyguard. While Heather is making sure everything for the teen rock camp goes off without a hitch more attempts are made on Talia's life. Heather and Cooper investigate what's going on and are determined to find out who would want to hurt the nation's sweetheart.

Meg Cabot's SIZE 12 AND READY TO ROCK is an amusing romantic mystery. Cabot known for her Princess Diary series is an award winning author and has another winner with her fourth novel in her Heather Wells Mystery series, SIZE 12 AND READY TO ROCK. I found the story fun and lighthearted and enjoyed the whodunit plot. My only concern was that this book is advertised as an adult novel while I felt it was more geared towards Young Adult. I would recommend this book to those who enjoy YA and encourage the readers to also read books 1-3 in this charming series.