Size 12 and Ready to Rock by Meg Cabot

Former pop star turned assistant residence hall director Heather Wells is back — and life at New York College is about to get dangerously loud. When a reality TV show featuring her ex-boyfriend’s new pop sensation fiancée sets up camp at the dorm, Heather braces for chaos. But when a member of the entourage turns up dead, she’s once again pulled into a whirlwind of gossip, secrets, and murder. As she juggles her unpredictable love life and the pressure of solving a crime under the public eye, Heather must uncover the truth before the killer strikes again.