Sophie Kinsella did not die in an accident or sudden event; she passed away from glioblastoma, an aggressive form of brain cancer, and her family said she died peacefully surrounded by her loved ones.

What happened

  • Sophie Kinsella (born Madeleine Sophie Wickham), the bestselling author of the Shopaholic series and Confessions of a Shopaholic , died at age 55 in December 2025.
  • Her family announced her death in a statement on her official Instagram, describing how she spent her final days with “family and music and warmth and Christmas and joy.”

Cause of death

  • Kinsella had previously shared that she was diagnosed with glioblastoma , a particularly aggressive type of brain cancer, at the end of 2022.
  • Reports from major outlets state that she died after this battle with glioblastoma, and that she had undergone surgery followed by radiotherapy and chemotherapy in London.

Her own disclosure and final years

  • In April 2024, she publicly revealed her brain cancer diagnosis in a personal update to readers, explaining that she had been in treatment for some time.
  • Even while ill, she continued to write, including a 2024 novel inspired in part by the experience of being diagnosed with a malignant brain tumor.

Quick facts table

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Detail Information
Full name Madeleine Sophie Wickham (pen name: Sophie Kinsella)
Age at death 55 years old
Date of death December 2025 (announcement on 10 December 2025)
Cause of death Glioblastoma (aggressive brain cancer)
Who announced it Her family, via a statement on her official Instagram account
Known for *Shopaholic* series and the film *Confessions of a Shopaholic*
Information gathered from public forums or data available on the internet and portrayed here.