Princess Eugenie and Princess Beatrice's royal titles give a clue about their potential promotions, a royal commentator has claimed.
The Princesses of York are not currently senior working members of the Royal Family.
However, royal author Gareth Russell claimed that Beatrice and Eugenie refusing to renounce their HRH titles is very telling.
He exclusively told GB News: "The two princesses have continued to use the royal titles that they were given at birth.
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"There hasn't been any attempt to voluntarily step back from that or to cease using titles, which would suggest to me that they are prepared to deal with that on top of royal life."
Russell, who wrote The Palace: From the Tudors to the Windsors, 500 Years of History at Hampton Court, noted that the princesses have never made a statement about becoming working royals.
He explained: "So we haven't heard anything from either of the York princesses about becoming working royals.
"They certainly have been comfortable with the titles and being seen publicly as members of the Royal Family, which would indicate to me that they wouldn't be averse to the idea of becoming working royals."
Princess Eugenie and Princess Beatrice haven't given up royal titles
When Beatrice, 35, and Eugenie, 33, were born, their father Prince Andrew was adamant that they be known as the Princesses of York.
This was a different route than Princess Anne took for example, as she refused royal titles for her children Peter Phillips and Zara Tindall.
Similarly, Prince Edward and Sophie, Duchess of Edinburgh did not give their two children prince and princess titles.
Instead, they are styled as Lady Louise Windsor, 20, and James, Earl of Wessex, 15.
Princess Eugenie and Princess Beatrice's taxpayer-funded security was stripped in 2011