Members of theRoyal Family were photographed enjoying a day out as they attended Ascot.
Royal Ascot, a five-day flat horse racing event held annually at Ascot race course in Berkshire, is a major event in the social calendar.
And it is popular with many royals, notably, the late Queen Elizabeth II famously loved the race - so much so, after she died, some thought The Firm's connection with it may end.
But King Charles has continued to attend the event, and was pictured there today, appearing extremely happy at times, with photographs showing the monarch smiling, laughing, and chatting with other racegoers.
Among the other royal attendees were Princess Anne and her daughter Zara Tindall, 43, - who are both famous for their love of horses - as well as Zara's husband Mike Tindall, and her brother Peter Phillips.
King Charles and Queen Camilla are snapped waving at crowds as they arrive at Royal Ascot on Tuesday
Princess Anne, who famously loves everything horse-related, looked exasperated while watching the action at Ascot
Lady Gabriella Kingston (pictured) makes her first official public appearance since the tragic death of her husband in February
Queen Camilla accompanied the King, with the royal couple arriving together in a carriage. Princess Eugeniewas also snapped at the event.
Poignantly, Lady Gabriella attended Ascot today, making it her first official public appearance since the death of her husband.
Her late husband, Thomas Kingston died by suicideon February 25th at the age of 45 at his parents' home in the Cotswolds.
Lady Gabriella, who is the daughter of Prince and Princess Michaelof Kent, arrived at the event in a carriage she shared with Princess Anne and Peter Phillips.
She was seen being comforted by a number of royals, including Zara Tindall, who was snapped hugging the grieving Gabriella.
The King's appearance at Ascot today followed Trooping the Colour at the weekend.
However, despite his busy schedule, and the fact he is undergoing treatment for cancer, the monarch seemed buoyant and in good spirits during the day.
The 75-year-oldwas dressed in traditional grey morning suit for the annual sporting event in Berkshire.
Zara Tindall (pictured, left) looks sophisticated and chic as she attends Royal Ascot in a yellow frock with her husband Mike Tindall (pictured, right)
Despite his recent hectic schedule, and undergoing treatment for cancer, King Charles (pictured) appeared to be in highs spirits today
Princess Eugenie was among numerous members of the Royal Family who attended the first day of Ascot today
Princess Eugenie, who looked chic in a pale green frock and cream hat, was snapped while chatting with another guest
Lady Gabriella Kingston (pictured, right) arrives at the event in a carriage, accompanied by Princess Anne (pictured, left)
It's no surprise that Princess Anne (pictured) was among the royals at Ascot today - she has a famous fascination with horses
Today marks the first day of the famous equestrian event, which is a favourite among members of The Firm (pictured: Zara Tindall)
Zara Tindall is pictured embracingLady Gabriella Kingston as they both attend day one of Royal Ascot in Berkshire
As well as attending Royal Ascot today, Lady Gabriella Windsor (pictured) was at Trooping the Colour last Saturday
The king (pictured) looked smart in a grey blazer, which he paired with a yellow waistcoat, white shirt, and blue tie
Mike Tindall, pictured looking dapper in a smart suit and top hat, is thought to be among the most popular royals
Racing manager John Warren (pictured, left) and Princess Anne's son Peter Phillips (pictured, right) arrive at the event in a carriage
King Charles' niece Zara Tindall (pictured) was among the royals at Ascot today, attending with her husband Mike Tindall (pictured)
SAY CHEESE! Zara and Mike Tindall (pictured) were seen posing for a selfie with another Ascot attendee
Along with a yellow waistcoat, the King donned a light blue tie, a blue pocket square and a black top hat. He carried a large black umbrella with him.
The Queen also looked stylish, wearing a royal blue coat dress and a coordinating hat.
She styled her hair in her signature bouncy blow-dry and accessorised with a pair of pearl earrings
Meanwhile, Zara Tindall looked chic and sophisticated in a patterned yellow ensemble.
Sheput her best fashion foot forward in a stylish buttermilk-coloured button-up dress that featured a pointy collar and puffy blouse sleeves.
The chic garment had a belt that cinched in Zara's waist, showing off her slender frame.
43-year-old Gabriella was pictured with her arm around Mike Tindall's shoulders, as he wrapped a comforting arm around her waist
Despite receiving treatment for cancer, King Charles (pictured) still has a busy schedule. His Ascot appearance followed his attendance at Trooping the Colour on Saturday
King Charles (pictured, left) and Queen Camilla(pictured, right) are seen arriving at Royal Ascot in a carriage
The royal couple were seen waving at the assembled crowds as their carriage arrived at the event (pictured L-R: King Charles; Queen Camilla)
Zara, known to share her mother's love of equestrian sports, was all smiles as she made her way around the Royal Enclosure - which is invitation only - at the racecourse in Berkshire today.
The mother-of-three looked every inch a royal in a rattan-style hat, which she perched on the edge of her head and wore her glossy blonde tresses in an elegant low bun.
Her husband Mike Tindall looked dapper, attending the races in a sleek black top hat and a three-piece suit featuring a white crisp shirt, floral embroidered tie, grey waistcoat and a smart blazer.
The pair looked in high spirits and smiled as they took selfies with other revellers at the racecourse today.
King Charles has been described as a 'workaholic' according to some reports, which say the monarch has not wanted to slow down, despite his current illness
Camilla has been praised for her style since becoming queen. She often wears vibrant colours and outfits with a similar flattering silhouette
Another image of King Charles again showed the royal appearing to have a good time at the event, as he was snapped laughing
It has been a busy few days for the king (pictured), with Trooping the Colour on Saturday, and Royal Ascot this week
At one point, Queen Camilla (pictured) appeared to gasp as she watched theQueen Anne Stakes (which was won byCharyn ridden by Silvestre De Sousa, not pictured)
WATCHING THE ACTION: King Charles and Queen Camilla appear deep in concentration as they watch the action from the stands
They even shared an awkward moment with Queen Camilla, as her wide-brimmed headpiece got in the way of the couple trying to greet her with a kiss.
And Princess Eugenie joined the other well-dressed royals, looking stylish in a pale green frock and cream hat.
Writing jointly in the official programme, Charles and Camilla said: 'It gave us immense pleasure and joy to witness Desert Hero's victory in the King George V Stakes last year, particularly as he was bred by Her late Majesty.
'We wish all the participants this week the very best of luck in seeking that unique thrill of a Royal Ascot winner.
'We also hope that those here at the racecourse and watching from home will enjoy five days of the finest racing that this sport has to offer.'
King of the racecourse! Charles leads the family as glamorous Zara and Princess Beatrice join him for Royal Ascot
