Queen Camila is all smiles as she's joined in the Royal Box at Wimbledon by her younger sister Annabel who's been by her side during her darkest times

• e-mail

Queen Camilla laughed and smiled as she chatted with her little sister - while the pair attended day ten of Wimbledon together.

The royal, 76, and Annabel Elliot, 75, thoroughly enjoyed each other's company as they took in the action from the Royal Box today.

The pair looked animated during the sporting event, leaning into one another and chuckling as they watched tennis.

Both were also equally delighted to sit with one another at last year's Wimbledon, while at Ons Jabeur's match against Elena Rybakina.

It is perhaps not surprising that the duo are being spotted together more, with Camilla proving to be a pillar of support for her sister - who last year lost her husband. 

The royal, 76, and Annabel Elliot, 75, thoroughly enjoyed each other's company as they took in the action from the Royal Box today

In December, Camilla's sister was full of praise for the Queen and described her as the King's 'rock' for a  BBC One royal documentary following Charles's first year as monarch, Charles III: The Coronation Year.

Annabel, who acted as one of her sister's two Ladies in Attendance on the day of the Coronation, added: 'She is his rock, and I can't actually emphasise that enough.

'She's somebody who is completely loyal and she isn't somebody who has huge highs and lows.'

But she stressed that it wasn't a one-sided relationship, explaining: 'He brings to her everything. I'm not talking about all of this [she said, referring to Buckingham Palace], but... he has such a knowledge and interest in so many different things, which she wouldn't really have been open to if she hadn't met him.

'They are yin and yang, really. They really are polar opposites. But I think it works brilliantly.'

She added, waving her hand upwards to indicate their work rate: 'Most of us as we get to this sort of age are thinking yes, quiet times. But theirs is just going to go like that.'

Annabel - an interior designer and antiques dealer - has been described as her sister's quieter counterpart.

The pair previously recalled spending their childhood rolling down hills, catching butterflies and dressing correctly for their strict grandmother while staying at their grandparents' Hampshire home.

Queen Camilla laughed and smiled as she chatted with her little sister - while the pair attended day ten of Wimbledon together

The pair looked animated during the sporting event, leaning into one another and chuckling as they watched tennis

It is perhaps not surprising that the duo are being spotted together more, with Camilla proving to be a pillar of support for her sister - who last year lost her husband

She donned matching cream ensembles with her sister as she attended day ten of Wimbledon today 

Annabel, who acted as one of her sister's two Ladies in Attendance on the day of the Coronation, attended Wimbledon with Camilla (pictured) today

As young women, Camilla loved the debutante circuit while Annabel was rather more serious and preferred a quieter life — 'not the kind of girl to throw her knickers on the table', as it has been put. 

Annabel has said that Camilla, who was a debutante a year ahead of her, 'was a great success, but I certainly wasn't. I probably wasn't quite as confident as her.'

At the same time, Annabel was seen as the more intelligent sister with 'taste', who eschewed the London party scene. Instead, she went to Florence to study art.

One friend asserted that Annabel, 'with her style and good taste, is the one who should have been a duchess'. 

'She'd have been perfect,' said the friend, 'but would never want to change places. As for Camilla, she pulls it off, in her own way.'

In 1972, Annabel married her first real boyfriend at 23 - Simon Elliot, and in 1973 Camilla, aged 25, married her first husband - dashing Army officer Andrew Parker Bowles.

Annabel and her husband, who died in March aged 82, inhabited a country house in the Dorset village of Stourpaine where Charles and Camilla would meet for discreet weekends as secret lovers.

The pair have previously recalled spending their childhood rolling down hills, catching butterflies and dressing correctly for their strict grandmother. Pictured as children 

Annabel continued to support her sister throughout the difficulties of the relationship, driving Camilla away and out of public view when John Major announced in the Commons the separation of the Prince and Princess of Wales in 1992.

Annabel's 40th birthday party was where Diana confronted Camilla over her relationship with Charles. 

It was her 50th birthday celebrations at the Ritz where Camilla came out as Charles' partner, using the occasion to pose for their first public pictures together on the hotel steps.

Charles and Camilla have also been advocates of Annabel's interior design business, reportedly paying her £1.5million for goods and design services since the pair married in 2005.

Annabel was paid for refurbishing the Duchy's holiday cottages in Cornwall, the Scilly Isles and Wales as well as the Duchy's office in Restormel, Cornwall, and Penlyne Nursery, also in Cornwall.

She was also employed to oversee a huge interior design commission from the Duchy of Cornwall — a 20-bedroom pub in the centre of Dorset model village Poundbury. 

The Duchy admitted that the contract for the work was not put out to tender.

But a spokeswoman said that Elliot understood the Duchy's commitment to environmental sustainability and to sympathetic design which is in-keeping with the local area.

When the pair were younger, Annabel was seen as the sister with 'taste', who eschewed the London party scene and went to Florence to study art . They are pictured together in 2016

Camilla's younger sister, interior designer and antique dealer Annabel Elliot, has supported the Queen Consort throughout the difficulties of her relationship with Charles. Pictured in 2014

In March last year, Charles and Camilla were among guests who flocked to the streets of Dorset to pay their respects to Camilla's brother-in-law Simon Elliot.

The businessman was married to the royal's younger sister Annabel for over 50 years and passed away at the age of 82.

The Queen was so close to her brother-in-law that she invited him and her sister Annabel to join her and Charles on their honeymoon in Scotland, Balmoral, after she wed the then Prince Charles in 2005.

The King and Queen frequently visited the couple in Stourpaine when they were dating. 

Grieving friends and family of the late businessman were pictured arriving at the service at Holy Trinity Church in Stourpaine, Dorset. 

Police sealed off all roads to the church during the service to allow Simon's coffin to be driven through the small village.

Following the service, guests were seen making their way to the local pub The White Horse Inn.

Although Charles and Camilla were not pictured arriving at the funeral, they are understood to have attended the service in a show of support to his widow Annabel.

The church in Stourpaine is where funerals of the Queen's brother, Mark Shand, and her father Major Bruce Shand, had previously been held. 

Leading the mourners were Simon's three children, former Conservative Party co-chairman Ben Elliot and his sisters, Alice and Catherine. 

Queen Camilla was joined by two elegant companions as she walked alongside her sister Annabel Elliot and close friend The Marchioness of Lansdowne during the historic Coronation ceremony earlier this year. Pictured left to right: Ralph Tollemache, Lord Oliver Cholmondeley, Nicholas Barclay, Prince George, the Marchioness of Lansdowne, King Charles III, Queen Camilla, the Queen's sister Annabel Elliot, the Queen's grandson Freddy Parker Bowles, the Queen's great-nephew Arthur Elliot, and the Queen's grandsons Gus Lopes and Louis Lopes

The royal, 75, axed the centuries-old tradition of having ladies-in-waiting as part of her retinue last September - instead opting to have a smaller number of 'Queen's companions'

Fiona Clare created two long, ivory dresses for Her Majesty's Companions, designed to complement each other whilst retaining individual touches in terms of the embroidery and choice of fabric

Last year, Queen Camilla and her sister were joined by culinary royalty as both Her Majesty and Mary Berry attended the Royal Box at Wimbledon

Queen Camilla was joined by two elegant companions as she walked alongside her sister Annabel and close friend The Marchioness of Lansdowne during the historic Coronation ceremony last year.

The royal axed the centuries-old tradition of having ladies-in-waiting as part of her retinue last September - instead opting for a smaller number of 'Queen's companions'.

It's evident that both have an eye for fashion and aesthetics -  having worked in interior design - as the two women struck the perfect chord between sophistication and glamour with their gowns.

On New Year's Eve, Annabel attended the morning church service at St Mary Magdalene Church in Sandringham, Norfolk, along with her sister and brother-in-law

Elsewhere, she was also pictured at day one of the Royal Ascot last month. Pictured right, next to Ruth Wood, Countess of Halifax

Fiona Clare created two long, ivory dresses for Her Majesty's Companions, designed to complement each other whilst retaining individual touches in terms of the embroidery and choice of fabric.

Silver edging features on The Marchioness's, whilst Annabel's has a standing collar and hand-embroidered detail.

The royal had her two confidantes by her side throughout in the festive ceremony.

On New Year's Eve, Annabel attended the morning church service at St Mary Magdalene Church in Sandringham, Norfolk, along with her sister and brother-in-law.

Elsewhere, she was also pictured at day one of the Royal Ascot last month.