#16 The Unraveling of Cassidy Holmes by Elissa Sloane

Cassidy Holmes, first runner up in an American Idol type contest, is asked to join a promising girl band that hits it big. Fifteen years later, she committed suicide. The book alternates between the past and current day, from the pov of the four girls in the group. Lots of emphasis on the darker side of fame. Some plot points could've been better fleshed out.