However, the Royal Family have been facing some challenging months this year after the King and the Princess of Wales were diagnosed with cancer, leaving only a handful of working royals to juggle the workload – and royal watchers are increasingly keen to see more non-working royals, including Louise, step up to help the monarchy.

Veteran royal commentator Richard Fitzwilliams touched down on the subject and opined: “The myth of a ‘slimmed down monarchy’ being desirable has been exposed, especially in circumstances which have seen two senior royals, the King and the Princess of Wales, battling cancer.”

Mr Fitzwilliams said that the Firm can now conduct fewer royal engagements due to them facing health woes, thus creating the need for an extra pair of hands.

He continued: “Lady Louise, daughter of the Duke and Duchess of Edinburgh, both hard-working senior royals, was not originally intended to do royal duties.

“She is currently in her second year at St Andrews. We also know she has taken up her grandfather Prince Philip’s interest in carriage driving.”

But the expert added: “Her appearance at the Trooping clearly raises the possibility, that, should she wish to, she might one day play a part in royal life and carry out some royal engagements. She looked gorgeous and has her admirers.

“Only four working royals are under 70 and if she was keen, her participation, probably part-time, would help fill a gap which would be very beneficial to the monarchy.”