Sophie Kinsella, the renowned British author celebrated for her "Shopaholic" series, passed away at 55 after a three-year battle with glioblastoma, an aggressive brain cancer diagnosed in 2022.Her family, including husband Henry Wickham, announced her peaceful death, noting her resilience and love for family, music, and Christmas, and revealed the diagnosis was initially kept private for their children's sake.Actress Isla Fisher, who starred as Rebecca Bloomwood in the 2009 film adaptation of "Confessions of a Shopaholic," paid tribute to Kinsella, expressing gratitude for her witty words and impact on her own daughters.