LIFE AT FULL GALLOP

Princess Anne has no intention of slowing down as she marks her 75th birthday with husband Vice-Admiral Sir Tim Laurence by her side

- EMILY NASH

She's the Royal Family's “super trouper,” according to the Prince and Princess of Wales – and, along with the King, the hardest-working member of The Firm by quite a distance.

But as Princess Anne turns 75 in typically low-key fashion, she shows no signs of slowing down.

A new image released for her Aug. 15 birthday shows the King's sister with her husband, Vice-Admiral Sir Tim Laurence, at a recent state banquet in Windsor Castle.

Taken as the couple arrived for duty, it shows Anne – who was Hello!'s original cover girl when the magazine launched in 1988 – looking timelessly elegant in a white evening dress and bolero jacket, paired with a dazzling diamond necklace and the Festoon tiara.

Proving her sustainable-fashion credentials, the royal style icon is wearing the same gown in which she posed for an official portrait when she turned 70. But it's safe to assume that she will be more casually dressed on her big day as she enjoys a bracing sailing holiday around Scotland's west coast with her husband.

LIFETIME OF SERVICE

The self-effacing Princess Royal had not wanted the milestone to be marked with any big fanfare, telling aides that she was only interested in celebrating a birthday with a zero in it, “not the fives.”

However, she did approve a few requests, including two new portraits and a commemorative silver £5 coin from The Royal Mint – the first for a royal sibling and one that honours her “remarkable lifetime of service.”