When Jennifer Weiner announced the plot for her latest novel, The Griffin Sisters’ Greatest Hits, I knew I had to get my hands on a copy. Weiner is well known in publishing for her exploration of the complicated female relationships we all experience, especially as mothers, daughters, and sisters, and this book examines all that and more against the backdrop of the music industry in the early 2000s. Synopsis: Cassie and Zoe Grossberg were thrust into the spotlight as The Griffin Sisters, a pop duo that defined the aughts. Together, they skyrocketed to the top, gracing MTV, SNL, and the cover of Rolling Stone. Cassie, a musical genius who never felt at ease in…