Sarah Ferguson has often spoken of her special bond with the late Queen calling her an incredible friend and mother-in-law.
And now she has given her verdict on what her former brother-in-law Charles will be like as King - and also revealed her thoughts on the new Queen Consort Camilla.
Fergie has remained on friendly terms with her former husband Prince Andrew and appears to have been welcomed back into the royal fold in recent years.
In an interview to promote her brand new romance novel A Most Intriguing Lady, the 63-year-old opened up about the new monarch and his wife.
And she told OK! magazine that she believes that Charles will continue to grow his late mother's legacy.
She explained: "I have known both the King and the Queen Consort since I was a child.
"I think if you look at the King's track record in areas like the environment, where he was decades ahead of his time, and the Prince's Trust, it's clear what an extraordinary man he is and how fortunate we are to have him on the throne."
Meanwhile, she also had warm words for Camilla - and praised the causes that she has championed.
She added: "I also admire the way the Queen Consort has worked tirelessly in areas like literacy and domestic violence."
Meanwhile, Sarah, who now looks after the late Queen's remaining corgis Sandy and Muick, says she still misses the former monarch.
She added: "Her Majesty was an incredible head of state, an incredible mother-in-law and an incredible friend.
"For me to be able to call her that was the greatest honour in my life. I used to have to pinch myself when I was sitting with her and asking her advice.
"Her door always remained open to me and we saw a lot of each other right up to the end, for which I will always be grateful. I miss her more than words can express."
And in an appearance on the One Show recently, Fergie shared the beautiful advice the late Queen gave to her.
She told Alex Jones and Jermaine Jenas: "I remember she used to say 'Sarah there needs to be more kindness in the world, which would disarm malice.
"And I feel it's really important we should all stop for a minute and remember those words with respect and affection for a great leader and now has passed it on to another great leader in her son."
And talking about the corgis, she added: "I really love when I'm with them actually, I really think about HM and I just think about the value system she supported in this country and how the nation mourns her.
"But yet how exciting we move on to a new monarch and the coronation, and I think so important for the whole country to unite and uphold the value system that for 72 years the monarch gave us all."
