Sarah Ferguson has praised Queen Elizabeth as a "wonderful grandmother".
The 89-year-old monarch is grandmother to Sarah's daughters, Princesses Beatrice and Eugenie, and although Sarah is divorced from Queen Elizabeth's son Prince Andrew, she still has a great deal of admiration for the royal family.
Speaking to radio hosts Kyle and Jackie O, she said: "She's the most incredible lady I have ever met in my life.
"She's the best read person, and the most wonderful grandmother to the girls."
Meanwhile, Sarah is currently on a four-day trip to Sydney, Australia, where she admitted that she regrets never getting a university education.
Speaking at the Macquarie Graduate School of Management, she said: "I wonder if I wouldn't have made so many mistakes or gone nearly bankrupt or done all the things I did had I had more of a constructive business focus.
"We will never have full justice in society until every human being is treated and celebrated for the potential they have, because the fact of humanity matters far more than gender and we still have a long way to go for women to be treated equally and fairly."
Tagged in Sarah Ferguson Queen Elizabeth Princess Eugenie