The novelist Jackie Collins has died of breast cancer at the age of 77, her family said in a statement.
"It is with tremendous sadness that we announce the death of our beautiful, dynamic and one-of-a-kind mother," the statement said.
The British-born writer, sister of actress Joan Collins, died in Los Angeles, her spokeswoman said.
Collins's raunchy novels of the rich and famous sold more than 500 million copies in 40 countries.
In a career spanning four decades, all 32 of her novels appeared in the New York Times bestseller list.
The family statement said the writer lived "a wonderfully full life", adored by family, friends and readers.
"She was a true inspiration, a trailblazer for women in fiction and a creative force. She will live on through her characters but we already miss her beyond words," it added.
Collins was diagnosed with stage-four breast cancer six-and-a-half years ago, according to US celebrity magazine People.
She told the magazine in her last interview on 14 September that she had told few people about her diagnosis other than her three daughters, and did not regret her decision.
"I did it my way, as Frank Sinatra would say," she said.
"I've written five books since the diagnosis, I've lived my life, I've travelled all over the world, I have not turned down book tours and no-one has ever known until now when I feel as though I should come out with it."
She was in the UK less than a fortnight ago on a promotional tour for her latest book.