Prince Louis stole the show today at the Easter Service as he looked dapper in a double-breasted suit, leaving fans to remark on how grown up he has become. 

Prince George, 12, Princess Charlotte, ten, and seven-year-old Prince Louis joined the King and Queen at the traditional Sunday service at St George's Chapel in Windsor.   

The youngest child of the Prince and Princess of Wales gleamed in his dark blue double-breasted suit, complete with a light blue tie, as he arrived with his parents – the Prince and Princess of Wales. 

The royals – showing a unified front – waved and smiled at the crowds as they chatted happily while walking down the path to the church. 

It is custom for working members of the Royal family to walk from Windsor Castle, despite today's blustery conditions, while Charles and Camilla were driven by the State Bentley. 

As the King made his way inside, he appeared to then affectionately pat Louis and Charlotte on the cheek, as the children waited with their parents for the monarch to enter the church first. 

The adorable royal is treasured by the nation for his cheekiness, which includes charming the crowds through his emotive facial expressions. 

Fans jumped at the occasion today as they scattered social media with exclamations on how grown up Louis looked. 

One user posted a photo of the young royal, and wrote: 'I love that Prince Louis is into double-breasted suits. He clearly loves that style of suit and I am obsessed with it. I really hope he doesn't change in the future and always sticks with that kind of look, because they're elegant, and they suit him so well.'

Another wrote, accompanied by a photo of the loved family: 'I leave you with this image. The Prince and Princess of Wales and their family, on their way to Easter service at St George's Chapel, Windsor. GEORGE IS ALMOST AS TALL AS HIS MOTHER. LOUIS IS HUGE TOO.' 

While one wrote: 'Love Louis, he always has a ready for fun...there is definitely somebody over there, who has brought me sweets look. Beautiful family, I am so happy for them all and especially Prince William.xo.'

Kate wore an off-white ensemble of skirt, small jacket and leafy hat, while William and the boys wore dark blue suits and ties. 

Princess Charlotte was sporting a pretty dress under an elegant camel-coloured coat with a brown velvet collar and cuffs. 

Camilla opted for a red wool crepe dress by Fiona Clare and a hat by Philip Treacy with a brooch that once belonged to Queen Elizabeth II. 

Meanwhile the disgraced Andrew Mountbatten-Windsor, who was notably absent from today's event, yesterday cut a lonely figure as he was pictured walking his dogs on the Sandringham estate. 

This comes after his alleged 'riding ban' following his arrest on February 19, on his 66th birthday. 

The former Duke of York was reportedly urged to stop riding – one of his favourite hobbies – after aides feared it would be a 'bad look' while under police investigation for misconduct in public office. 

He has denied any wrongdoing over his links to Epstein regarding Ms Giuffre, but has not directly responded to the latest allegations.  

Princess Anne and her husband, Vice Admiral Sir Tim Laurence, also joined the Easter gathering, alongside the Duke of Edinburgh and his 18-year-old son James, Earl of Wessex.

The Duchess of Edinburgh was expected to attend but was 'under the weather', while her daughter, Lady Louise, was busy with her studies. 

Notably Andrew's daughters Princess Beatrice and Princess Eugenie did not attend the Easter Matins service. 

With the agreement of the King, the pair have made alternative plans and will miss the traditional gathering. 

After the hour-long service, during which prayers were said for the Royal Family and the National Anthem sung, the royal party moved from the chapel to the deanery for tea with the Dean of Windsor, The Right Reverend Christopher Cocksworth. 

Charles appeared alongside Camilla after around 20 minutes and greeted the public waiting patiently outside the chapel. 

As they walked back up the hill to the castle, Catherine could be seen giving her daughter, Charlotte, a proud hug, placing her arm around her shoulders and squeezing her. 

The Easter Service comes days after Buckingham Palace announced Charles's visit to the US will go ahead from April 27 to April 30 as planned, despite tensions between President Donald Trump and Prime Minister Sir Keir Starmer over the Iran war.