Publisher Headline says Vincenzi died peacefully Sunday. The cause of death wasn't given.
Vincenzi worked as a journalist before publishing her first novel "Old Sins," in 1989. Her 17 novels and two story collections sold more than 7 million copies worldwide. Her last book, "A Question of Trust," was published in 2017.
Her four daughters said in a statement Tuesday that she was "a true trailblazer" who broke down barriers. Fellow novelist Sophie Kinsella said Vincenzi was "like one of her own novels: once you were in her company you didn't want to say goodbye." She is survived by daughters Polly Harding, Sophie Cornish, Emily Gunnis and Claudia Vincenzi.