Kate Middleton looks elegant as she attends Trooping the Color

Kate Middleton looks elegant as she attends Trooping the Color in an all green outfit

The Princess of Wales looked elegant in green today as she attended the Trooping the Color celebrations.

Kate Middleton, 41, beamed as she waved to bystanders on her way to the event.

She made her way to Horse Guards Parade by carriage, accompanied by Queen Camilla and her three children Prince George, 9, Princess Charlotte, 8, and Prince Louis, 5.

Today’s event is the first Trooping the Color since the death of Queen Elizabeth II last September and thus the first Trooping of King Charles.

And Kate looked stylish as she attended the historic event alongside other senior members of the firm today.

Gorgeous in green: Kate, Princess of Wales, has opted for a monochromatic outfit in green for today's festivities

Gorgeous in green: Kate, Princess of Wales, has opted for a monochromatic outfit in green for today’s festivities

The royale could be seen beaming radiantly from under the brim of her hat, which coordinated perfectly with the rest of her ensemble

The royale could be seen beaming radiantly from under the brim of her hat, which coordinated perfectly with the rest of her ensemble

The Princess of Wales (pictured right) wore an all green ensemble as she attended the Trooping the Color celebrations today (pictured with Queen Camilla, left).

The Princess of Wales (pictured right) wore an all green ensemble as she attended the Trooping the Color celebrations today (pictured with Queen Camilla, left).

Kate has opted for green today, representing her role as Colonel in the Irish Guards, which she took over from her husband at the end of last year

Kate has opted for green today, representing her role as Colonel in the Irish Guards, which she took over from her husband at the end of last year

The Princess of Wales rode to the event in a carriage with her three children (pictured) and the Queen Consort (pictured).

The Princess of Wales rode to the event in a carriage with her three children (pictured) and the Queen Consort (pictured).

Kate's green jacket had a military-style design

Kate’s green jacket had a military-style design

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The princess opted for a striking monochromatic look, wearing head-to-toe green to represent her role as Colonel in the Irish Guards – a role she took on from her husband late last year.

As a further nod to her Irish role, Kate wore a gold brooch in the shape of a shamrock.

And she again appeared to be wearing a pair of sapphire earrings that once belonged to her late mother-in-law, Princess Diana.

To finish off her look, the queen wore her auburn locks in a low bun, which she tucked under the brim of her hat.

Kate’s three children were also spotted arriving at the event together, waving enthusiastically at royal fans

Around 70 aircraft from the Royal Navy, British Army and Royal Air Force will take part in a flyby for Trooping the Color on Saturday, marking the first birthday flyby for Charles.

However, due to inclement weather, the extended military flyby may be scaled back.

The King, Queen and other members of the royal family are expected to watch the plane fly over the Mall and Buckingham Palace in a six-minute display.

Members of the Welsh Guards march in central London today during Trooping the Color - the first trooping for the new monarch

Members of the Welsh Guards march in central London today during Trooping the Color – the first trooping for the new monarch

The Ministry of Defense (MoD) said the aircraft will take off from 15 locations across the UK before meeting in south-east England and flying over London.

The event will feature a mix of aircraft ranging from the 1940’s Battle of Britain Memorial Flight and the C-130 Hercules on its final celebratory flight, to several Typhoon fighter jets and the Envoy IV CC1 making its flypast debut gives .

Leading the flyby is a Juno HT1 piloted by Flight Lieutenant Tom Knapp of 60 Squadron, No 1 Flying Training School, RAF Shawbury.

The event ends with a red, white and blue show by the Red Arrows pilots.

Royal fans were photographed lining the mall ahead of the Trooping the Color ceremony at Horse Guards Parade

Royal fans were photographed lining the mall ahead of the Trooping the Color ceremony at Horse Guards Parade

Today's event marked the first Trooping the Color with King Charles as monarch following the death of Queen Elizabeth II last September

Today’s event marked the first Trooping the Color with King Charles as monarch following the death of Queen Elizabeth II last September

The Ministry of Defense said many of the planes involved in the flyby had been involved in operations around the world this year, including NATO’s air surveillance mission in Eastern Europe and the evacuation of British citizens from Sudan.

Charles will be joined by the Queen and members of the Royal Family on Saturday to view the troops of the 1st Battalion Welsh Guards in their colour.

The annual Trooping the Color event has marked the ruler’s official birthday for more than 260 years.

More than 60 aircraft from the Royal Navy, British Army and Royal Air Force were scheduled to take part in the coronation flyby in May, but “unsuitable weather conditions” meant the plan was abandoned.

Instead, helicopters from the three branches of the armed forces and the Red Arrows took part in the two-and-a-half-minute demonstration.

Footage from Royal Navy helicopters showed how bad the weather was in the skies over London.

What is Trooping the Color?

The Trooping the Color ceremony is held to mark the reigning monarch’s birthday in the United Kingdom and has been held every year for the past 260 years.

This year the exhibition will take place on Saturday 17 June. Shown are the King’s personal troops, the Household Division, who will be stationed on Horse Guards Parade, while the King himself will be present to take the salute.

The popular event will draw large crowds, who will be seen alongside members of the Royal Family on horseback and in carriages, waving flags as the parade moves from Buckingham Palace across the Mall to Horse Guard’s Parade.

About 113 words of command are given by the commanding officer of the parade. The parade route stretches from Buckingham Palace along the Mall to Horse Guards Parade, Whitehall and back again.

During the ceremony, Charles is greeted with a royal salute before an inspection of the troops, who are fully trained and operational soldiers and dressed in the ceremonial uniform of red tunics and bearskin hats, is conducted.

After the assembled bands have performed a musical ‘troupe’, the escorted regimental flag is carried through the ranks.

The Foot Guards and Household Cavalry will march past His Majesty the King’s Troop and the Royal Horse Artillery. The King then rides back to Buckingham Palace at the head of his guard before accepting the salute outside the palace.

His Majesty will then join other members of the Royal Family for a Royal Air Force flyby on the palace balcony.

Rain dripped onto the windshields of planes flying low over the heart of the capital.

The Ministry of Defense said the birthday flypast had been enlarged to pay tribute to the new monarch.

The Chief of the Air Staff, Air Chief Marshal Sir Rich Knighton, said: “We are very proud to showcase our capabilities to our Commander-in-Chief on this historic occasion for His Majesty the King.”

“We have planned a dignified and fitting tribute to our monarch that should be a true spectacle for the United Kingdom and the Commonwealth.”

1st Group Air Officer Commanding, Air Vice-Marshal Mark Flewin said: “It is a great honor to be part of His Majesty the King’s birthday celebrations where the flyby is an opportunity for us to demonstrate formation, precision and excellence in to demonstrate in the air.’ to our Commander-in-Chief on such a special occasion.’