Zara Phillips has spoken of her struggle to get fit again after months out of the saddle while she was having her first child.
The Olympic medal winner and Queen's granddaughter gave birth to daughter Mia in Gloucestershire in January, and said she got on a horse for the first time afterwards five weeks later.
She says it was hard trying to get each muscle group to remember what they used to do.
Thousands are expected at RAF Fairford in Gloucestershire for the world's biggest military air show.
The Royal International Air Tattoo opens to the public today. Prince Charles is expected to attend.
Prince Charles returned to the Somerset village of Muchelney today, 5 months on from the height of the flooding.
He met with residents, farmers and local businesses to see how the area is recovering after the worst floods in a generation.
Our Somerset Correspondent David Woodland reports:
Prince Charles will be in Somerset today to meet people and businesses affected by the floods.
His Royal Highness visited Muchelney on the Somerset Levels in February, and will be returning to see how the village is recovering.
He will also be visiting Glastonbury Abbey and Castle Cary train station to see how the tourism industry is coping following the flooding.
The Queen's grand daughter says she's delighted to be back in major competition for the first time since the birth of her daughter Mia.
Zara Phillips, who lives with her husband Mike Tindall in Gloucestershire, has been selected in the Team GB squad for the World Equestrian Games in August.
Obviously I'm really excited - it's fantastic to be part of a team again.
We've got a bit of work still to do to get back to where we were last year but will have a few more outings to make sure we are right on target with our preparation.
Prince George with his mother Catherine, Duchess of Cambridge, was among the crowds as his father, Prince William, Duke of Cambridge, and uncle Prince Harry played in a charity polo match at Cirencester Park Polo Club on Father's Day.
It was a great opportunity to see George's progress at walking. The press pack were out in force to catch those first tottering steps.
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Mike Tindall and his wife Zara have sold the first pictures of their baby daughter Mia to Hello! Magazine.
Speaking to ITV News, rugby union World Cup winner Tindall said, "We did it because people wanted it and we had control over it.
We had those photos done anyway. It was more because people seemed to want it rather than anything else."
Buckingham Palace declined to comment on whether the Queen had been consulted over the photographs, which appear in this week's edition.
Olympic medal winning sportswoman Zara and former England rugby star Mike revealed that their daughter was "pretty relaxed and happy so far".
Mia Grace Tindall is the Queen's fourth great-Grandchild and was born on 17th January 2014. She is 16th-in-line to the throne.
Zara Phillips and Mike Tindall have sold the first pictures of their baby daughter Mia to Hello! magazine.
The Queen's fourth great grandchild, who is 16th in line to the throne appears on the front cover of this week's edition.
Dressed in a white striped baby gro, Mia, who was born on January 17, is pictured lying in front of her proud parents.
In 2008, Zara's brother Peter Phillips was criticised after selling photos of his wedding to Canadian bride Autumn Kelly to Hello! and reportedly receiving £500,000 in return.
A spokesman for Hello! said the magazine was 'delighted' that Zara and Mike Tindall chose to share their baby pictures with them.
For everyone who has asked what our daughters name, it’s Mia Grace Tindall
The baby's father Mike Tindall has announced his daughter's name via Twitter as Mia Grace Tindall. Mia is 16th in line to the throne.