KING Charles beamed as he hugged niece Zara Tindall at the Windsor Horse Show today after asking aides to "supercharge his diary".
Excited to get back to public duties, the 75-year-old monarch was all smiles today at the rain-soaked event, donning a smart camel trench coat and brown suit.
The King is "raring to go" and "supercharged his diary" as he has cancer treatment, says a palace source.
Charles was snapped tenderly embracing niece Zara Tindall, a former Olympian horse rider, in his third royal engagement this week.
He also cracked jokes and laughed with horse riders on the track sidelines.
Charles joined the event just like his mother used to.
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The King's Future Enagements
May 8 and 21: Buckingham Palace Garden Parties
May 21 - 25: Chelsea Flower Show
June 6: 80th anniversary D-Day commemorations in France and UK
June 15: Trooping the Colour birthday parade in London
June 17: Garter Day parade at Windsor Castle
June 18 - 22: Royal Ascot
Late June: State Visit by Emperor and Empress of Japan
July 3: Holyrood Week in Scotland
October: Two or three-week tour of Australia
The late Queen would regularly turn up as a spectator at the horse show, which is held at Windsor Castle.
Charles was last spotted, with Camilla by his side, on Sunday at Crathie Church service in Aberdeen.
It is the second time the pair has been spotted since Buckingham Palace revealed the King would be returning to public-facing duties.
His Majesty chose to make his public comeback by visiting a cancer hospital earlier on last week.
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He spoke to staff and patients with Camilla, 76, on St George's Day.
As a patron of MacMillan Cancer Support, Charles wanted the visit to raise awareness of the importance of early diagnosis and highlight innovative research supported by Cancer Research UK, which takes place at the hospital.
King Charles' return to public duties
Everything you need to know about the King's comeback.
Q: Does today's announcement mean King Charles' cancer treatment has been successful or finished?
A: The King's treatment programme is ongoing but doctors are "sufficiently pleased" with the progress so far and Charles is now able to resume several public-facing duties. Further royal engagements will be adapted where necessary to cut down on any recovery risks.
Q: How much longer will King Charles receive treatment?
A: While it is too early to say, the King's medical team are "very encouraged" by the progress made so far and remains "positive" about his recovery.
Q: How many engagements will King Charles undertake in the weeks and months ahead?
A: They will be announced nearer the time in the usual manner and will remain under the doctor's advice. It will not be a full summer programme. His Majesty will continue with all official State business and selected Audiences.
Q: Is there a risk King Charles may be taking on too much with these external duties?
A: The King's schedule will be carefully designed to meet his recovery needs and he will be in close consultation with his medical team.
Q: Will King Charles attend the Birthday Parade, D-Day Commemorations, Garden Parties, Royal Ascot, or an Autumn overseas Tour?
A: Planning continues for ways in which the King and Queen can attend these summer and autumn engagements. All plans remain under the doctor's advice.
Q: How is King Charles feeling?
A: The Palace said: "His Majesty is greatly encouraged to be resuming public-facing duties and very grateful to his medical team for their continued care and expertise.