Tara Palmer-Tomkinson died of “natural causes – a perforated ulcer”, her sister has said.
The socialite was found dead aged 45 at her West London home one week ago.
Author Ms Montefiore tweeted: “I’ve been so touched by the warm response to Tara’s death. Thank you from the whole family. But I’d like to clarify a couple of points.
“Today the Coroner’s report states that Tara died of natural causes – a perforated ulcer. She did not have a brain tumour.