Sir Ken Olisa, the first Black Lord-Lieutenant for London, said race is a "hot conversation topic" in the royal household.
The Duke of Sussex made a surprise appearance at the GQ Men of the Year Awards on Wednesday night.
The Duke of Sussex's news coincided with his first public appearance in the U.S. since the birth of his daughter, Lilibet.
A spokesperson for Buckingham Palace responded: "We didn’t comment when this book was first released and won’t be commenting now."
The Duke and Duchess of Sussex encouraged followers to take action to fight "feeling powerless."
The Duchess of Sussex received birthday wishes from Queen Elizabeth, Prince William, Kate Middleton and more.
The queen’s representative in New Zealand said discussions took place during the Duke and Duchess of Sussex's 2018 visit.
The Duke of Sussex briefly stole the show, causing McCarthy to burst into giggles.
The Duchess of Sussex discussed a "Suits" reunion and even getting matching tattoos with the "Bridesmaids" actor in a video announcing her 40x40 initiative.
The Duchess of Sussex has two kids, Archie and Lilibet, with her husband, Prince Harry.