Princess Charlotte and Prince Louis arrive at Westminster Abbey for the Coronation

The Prince and Princess of Wales’s two youngest children, Princess Charlotte and Prince Louis, stole the hearts of royal fans today as they smiled for the coronation on their way to Westminster Abbey from Buckingham Palace – and held hands during the opening moments of the historic employ.

Princess Charlotte, who turned eight this week, sat next to her little brother Prince Louis in a royal car with the Prince and Princess of Wales.

The siblings arrived without their older brother, Prince George, nine, who is a page of honor for his grandfather and follows the procession behind the king.

The young princess wears an Alexander McQueen gown and an ivory silk crepe cape with ivory embroideries with rose, thistle, daffodil and shamrock motifs to signify the four nations.

She wears a Jess Collett x Alexander McQueen silver, crystal and silver wire headpiece.

Princess Charlotte smiles sweetly as she arrives at the coronation with younger brother Louis

Princess Charlotte and Prince Louis appear to be taking in the solemnity of the historic day at Westminster Abbey

It was thought that Prince Louis may not have attended the ceremony, but the young prince arrived at Westminster Abbey along with his parents and older sister

The Princess of Wales, resplendent in red, white and blue, pictured with Prince Louis entering Westminster Abbey

Meanwhile, her younger brother Louis – who turned five on St George’s Day on April 23 – looked regal in a tailored outfit.

For the historic occasion, the young prince wears an outfit created by Savile Row tailors Dege and Skinner, which consists of a Hainsworth suspender blue Doeskin tunic with specially designed lace trim at the collar, cuffs and fronts. The leg garment is black, complete with Garter Blue stripe.

All eyes will be on Louis; last year, Louis was the standout star of his great-grandmother’s platinum jubilee celebrations, entertaining the crowds with his antics on the balcony of Buckingham Palace and in the audience at the jubilee pageant.

Because his parents are aware of the responsibility that rests on his young shoulders, it is believed that Prince Louis will not be present at the concert in Windsor tomorrow.

The youngsters will reunite for the grand carriage procession back to Buckingham Palace after witnessing King Charles’ coronation at the Abbey.

The Prince and Princess of Wales enter Westminster Abbey in front of Princess Charlotte and Prince Louis

Prince Louis of Wales makes his way to the abbey ahead of the coronation service, accompanied by his older sister Princess Charlotte

A smile for the crowd! Prince Louis, five, melted hearts as he joined the royal procession alongside the Prince and Princess of Wales and his older sister Princess Charlotte on their way to Westminster Abbey

Princess Charlotte is seen making her way to Westminster Abbey, the young princess wearing a Jess Collett x Alexander McQueen silver, crystal and silver wire headpiece similar to her mother’s

Charlotte wears an Alexander McQueen dress and an ivory silk crepe cape with ivory satin stitch embroidery with rose, thistle, daffodil and shamrock motifs to signify the four nations

The young royal waved to The Mall as he traveled in the royal car with his parents and sibling; his elder brother is a page of honor to his grandfather and follows separately in the procession behind the king

The Princess of Wales wears an Alexander McQueen dress of ivory silk crepe with embroidered silver and wirework with rose, thistle, daffodil and clove motifs, with the Royal Victorian Order mantle

The King and Queen travel in the 261-year-old Gold State Coach, followed by three carriages of working members of the Royal Family.

In the first carriage behind them are the Prince and Princess of Wales, along with George, Charlotte and Louis.

It will be the biggest public test for the three siblings, who grow in confidence in front of the watching world.

Thousands gathered on the Mall this morning as Charles III’s day of destiny kicked off. Just over 2,000 people arrived at Westminster Abbey this morning for the historic first coronation of a British monarch in 70 years at Westminster Abbey.

Crowds applauded and cheered as he walked from Clarence House to the Palace along The Mall as his day of destiny finally arrived

Britain’s great Coldstream Guards march The Mall

Heir since he was three years old, the monarch is now ready to finally embrace his day of destiny with the woman he loves by his side. VIP guests lined up for a mile from the abbey from 6am to get one of the top 2,300 seats.

Charles will be crowned in a Christian ceremony that stretches back 1,000 years on a day dripping with glorious pageantry. It will also highlight Britain’s place on the world stage.

His family, including Prince Andrew and Princess Anne, enjoyed dinner at Oswald’s Mayfair club last night. Mike and Zara Tindall were gone until 2 a.m. Prince Harry flew in from Los Angeles yesterday for his 24-hour journey. It emerged last night that he has been relegated to the third row in the Abbey with other non-working royals.

About 100 million people watch on TV around the world, with approx two million people – from all over the UK, the Commonwealth and the world – in London for the historic event.

The king’s guests arrived at the abbey from 7 a.m. – four hours before the ceremony. About 100 heads of state are in London, with representatives from 203 countries.