She passed away after being diagnosed with glioblastoma, an aggressive brain cancer, in 2022, a condition she revealed publicly last year.
Kinsella was best known for her popular 'Shopaholic' novel series, which sold around 45 million copies worldwide and was adapted into a successful film.
Initially writing serious novels under her real name, Madeleine Wickham, she adopted the Sophie Kinsella pseudonym for her comedic fiction, starting with the 'Shopaholic' series in 2000.
Her extensive literary career included numerous standalone titles and Young Adult fiction, and she is survived by her husband and five children.