Tara Palmer-Tomkinson, former party girl and a goddaughter of Prince Charles, was found dead at her London home on Wednesday. She was 45.
The prince said in a statement that he and his wife, the Duchess of Cornwall, were "deeply saddened" by news of her death.
"Our thoughts are so much with the family," he said.
The cause of death was not immediately clear, though Palmer-Tompkinson revealed last year that she had been diagnosed with a brain tumor.
Palmer-Tomkinson was a fixture on the international social stage throughout the 1990s. She was regularly photographed partying with the rich and famous, and helped fuel her reputation as a wild child...