Sarah Ferguson steps out in Australia as Princess Beatrice and Princess Eugenie spend time in Middle East

Sarah Ferguson signed dozens of Waikiki Primary School students' posters, hats and books on Monday afternoon as part of her Australia tour to promote her new children's book.

The former wife of Prince Andrew has written over 80 books, including several children's picture books.

She planned to use the trip for her work with the Youth Impact Council, a non-profit organisation that aims to help different generations communicate.

The 64-year-old postponed her trip to Perth to avoid clashing with King Charles and Queen Camilla's six-day royal tour of the nation last month.

The duchess has two children, Princess Beatrice, 36, and Princess Eugenie, 34, who are currently spending time in the Middle East.

Princess Eugenie, an art director for Hauser & Wirth, travelled to Doha, where she visited the art centre M7 and toured the Ellsworth Kelly exhibition.

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The Princess of York wore a £614 radiant yellow dress from Diane von Furstenberg for the occasion.

Her oldest sister, Princess Beatrice, travelled to Abu Dhabi for the ADIPEC Exhibition and Conference.

This comes just one week after the royal's trip to Saudi Arabia for the Future Investment Initiative.

A reporter based in the Middle East, Jennifer Gnana, claimed the pregnant mother-of-one has become a "culture ambassador of sorts for the UK in the Middle East".

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Prince Andrew's oldest child, the vice president of tech company Afiniti, took to the stage in Abu Dhabi to issue a powerful rallying call.

Speaking during a dedicated ADIPEC session on the role of AI in transforming society, Her Royal Highness spoke on the value of an inclusive approach to AI.

Beatrice said: "We need to have everyone's voice at the table.

"We need to have the energy sector, we need to have the AI companies, we need to have the individuals, but most importantly we also need the consumers as well, to come along on that journey with us."