"He'll always be my handsome Prince," said the Duchess at the promotion of her latest children's book on Sunday.
She went on to tell the audience of her own fairytale, which "has a happy ending" despite the couple getting a divorce back in 1996.
"We had a very beautiful wedding," Sarah, 53, told the audience at the Bath Children’s Literature Festival.
"Mummies and daddies in the audience might remember it – I think they might have had a day off.
"He really is still my handsome Prince. We really believe in being good parents for our girls."
When asked if there's a possibility of a reconciliation, Sarah said: "He's still my handsome prince, he'll always be my handsome prince. It's lovely that we are such a family and the story has a happy ending all the time."
Sarah's fond words for her former husband come just a month after reports that the royals were rekindling their romance.
Her visit to Balmoral with Andrew and their two daughters Princesses Beatrice and Eugenie in August – believed to have been her first invite to the castle since 1992 – fuelled the rumours.
The Duchess, who has continued to live in the same grounds of the Royal Lodge, the Queen Mother's former country home, with the Duke since their divorce 17 years ago, spoke of their respect and honour for one another.
"In our every day, we really respect each other and we honour each other and it's just lovely to have that sense of integrity, to what we believe is right; to what is good and compassionate and love and kindness. And that's the way we are."