Sep 2, 2008, 11:00 GMT
Sarah Ferguson, the Duchess of York, is earning £40,000 for a private appearance.
Sarah - the ex-wife of Britain's Prince Andrew - has been touring the US lecture circuit and she is said to have amassed a staggering £500,000 by giving speeches in California, New York and Washington.
The 48-year-old has been speaking on a variety of subjects, with seminars topics including ?My Road To An Authentic Life' and ?Overcoming Adversity'.
Sarah also reveals details about her life with the British royal family, discussing how she and Andrew have amicably raised their two daughters - 20-year-old Princess Beatrice and Princess Eugenie, 18 - since their divorce.
A source told Britain's The Daily Mail newspaper: "Sarah talks about how she changed her life, from being a mother to becoming a businesswoman. Co-parenting is part of her journey. Of all her achievements, she is most proud of being a mother - for 10 years she commuted to America, always making sure she was back at weekends and holidays for her daughters."
Sarah is set to travel to Canada for the next leg of her tour.
The duchess is no stranger to public speaking. She previously completed a successful stint as a representative for diet company WeightWatchers.
Sarah is currently enjoying a relaxing break in Spain with Eugenie and Beatrice.
She was left red-faced during the final of Gold Cup polo match at the Santa Maria Polo Club, in Sotogrande, when the wind blew her flimsy black and white dress up and exposed her legs to onlookers last weekend.
Sarah managed to quickly regain control of her outfit and held the dress in place to avoid any further embarrassment.
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