Roger Federer and his family visit Kensington Palace

Roger Federer and his young family had a brush with royalty when they stopped by at Kensington Palace to visit their friends Duke and Duchess of Cambridge.

The Swiss tennis ace, who is in London this week for the ATP Finals, was joined by wife Mirka and their two sets of adorable twins on Wednesday night.

The family were spotted leaving their hotel on Wednesday afternoon before making the short drive to Kate and William’s home where they stayed for around two hours.

The Cambridges have recently swapped Anmer Hall in Norfolk for Kensington Palace as their official residence as they prepare to take on more royal duties.

They are close friends of the Federers, who were guests at both Kate and younger sister Pippa’s weddings.

And the pair came armed with presents for their royal pals, with Mirka carrying what appeared to be two small wrapped gift boxes.

The couple, who wed in 2009, are parents to twin girls Myla Rose and Charlene Riva, eight, and Leo and Lennart, three.  

After leaving the palace later on in the evening, Myla appeared to be carrying a drawing with her name scrawled on it.

Mother-of-four Mirka, 39, was wearing a cosy black jacket over a blue and white striped dress, with her hair coiffed to perfection.

The Federers’ car is spotted arriving at the gates of Kensington Palace, west London on Wednesday evening as the tennis ace and his family drop in for a royal play date

 Family fun: When the family returned to their hotel later that evening, Myla appeared to be carrying a drawing with her name scrawled on it (far right)

Close knit: Roger has previously said of his devoted wife, ‘She’s the one who always tells me the truth and everything, so we go very well together’

The Federers were also joined by Roger’s mother Lynette, 65, on Wednesday and after returning to their hotel the adults were seen heading out for dinner

Glamorous: Stylish Mirka mastered autumnal dressing in a striking monochrome striped dress under a fitted black jacket. She added a pair of knee-high heeled books to her look

The Federers were joined by Roger’s mother Lynette, 65, on Wednesday and after returning to their hotel the adults were seen heading out again for dinner. 

The youngest set of twins are bound to get along famously with Prince George, who turned four earlier this year and has recently started primary school at Thomas’s Battersea.

Meanwhile Kate, 35, has only recently returned to royal duties after battling severe morning sickness during the first trimester her third pregnancy. 

The youngest prince or princess will be fifth in line of succession to the British throne after Princess Charlotte, two.

The tennis-mad Duchess is a regular fixture in the Royal box at Wimbledon and is Patron of the Lawn Tennis Association.  

Giving Kate a run for her money! The glamorous tennis tennis WAG wore her hair in perfect bouncy curls as she left the hotel carrying two small gift boxes in her left hand

Royal play date! The youngest additions are bound to get along famously with Prince George, who turned four earlier this year and has recently started primary school in Battersea

Mummy style: Mother-of-four Mirka, 39, wore a cosy black jacket over a blue and white striped dress, with her hair coiffed to perfection as usual

Firm friends: The royals are close friends of the Federers, who were guests at both Kate and younger sister Pippa’s weddings. And the pair came armed with presents for their royal pals, with Mirka carrying what appeared to be two small wrapped gift boxes

Tense: Following his royal visit on Wednesday, Federer and Čilić came face-to-face at the ATP Finals, with the Swiss champ securing a three-set win the day after his royal play date

Loved up: Roger has said of his wife, ‘She knows it, I know it, everybody knows it. She’s a mum number one and a wife, and only then later does she become the supporter’

Indeed, Kate and William watched as Federer thrashed Croatian Marin Čilić in the Wimbledon Men’s Singles Final in July before presenting him with his 19th Grand Slam trophy. 

Federer and Čilić came face-to-face once again this week at the ATP Finals in London, with the Swiss champ securing a three-set win the day after his royal play date.

The Cambridges have 22 rooms and two kitchens in their lavishly refurbished Kensington Palace apartment but Historic Royal Palaces recently submitted plans for an extensive ‘iceberg basement’ to added. 

Prince Harry lives in nearby Nottingham Cottage where he is often visited by girlfriend Meghan Markle. 

The Federers make their way into Kensington Palace. The Cambridges have 22 rooms and two kitchens in their lavishly refurbished palace apartment but Historic Royal Palaces recently submitted plans for an extensive ‘iceberg basement’ to added

Double trouble! The Federers, who wed in 2009, are parents to twin girls Myla Rose and Charlene Riva, eight, and Leo and Lennart, three (pictured here at Wimbledon 2017)

True love: Earlier this year, Roger praised his ‘number one supporter’ Mirka saying: ‘She’s been there when I had no titles and she’s still here 89 titles later, so she had a big part to play in [his Australian Open win]’

Lifelong passion: The tennis-mad Duchess is a regular fixture in the Royal box (pictured with William in July 2017) and is Patron of the Lawn Tennis Association

Roger and Mirka are close friends of the Federers, who were guests at both Kate and younger sister Pippa’s weddings (pictured here at Pippa’s nuptials to James Matthews in May)

Earlier this year, devoted Roger praised his ‘number one supporter’ wife saying: ‘She’s been there when I had no titles and she’s still here 89 titles later, so she had a big part to play in [his Australian Open win].

‘She knows it, I know it, everybody knows it. She’s a mum number one and a wife, and only then later does she become the supporter.

‘She stepped away from it a little bit after becoming super involved. I guess that was 2003, 2004 when she was right in the centre of the storm really. 

‘I didn’t enjoy that role for her really because she had to say no too many times. She got a bad rap for it.

‘She’s the one who always tells me the truth and everything, so we go very well together.’