Princess Kate’s look of love and other best moments from her Trooping the Color return – best photos as the Royals Mark the Kings Official Birthday

The royal family celebrated the King’s birthday parade, known as Trooping the Color, with the Princess of Wales making her first public appearance this year on Saturday. The crowds cheered and applauded as Kate, 42, who has been receiving treatment for an undisclosed form of cancer since late February, was joined by her three children, Prince George, Princess Charlotte and Prince Louis, in a carriage for the traditional procession.

She was surrounded by other members of the family, with her husband the Prince of Wales, Colonel of the Welsh Guards, on horseback, as were the Princess Royal, Colonel Blues and Royals, and the Duke of Edinburgh, Colonel Scots Guards. And in another change, the King, 75, traveled in a carriage with his wife, Queen Camilla, 76, instead of riding horseback amid his ongoing cancer treatment.

Meanwhile, the Duchess of Edinburgh was accompanied by her daughter, Lady Louise Windsor, 20, and the late Queen Elizabeth’s cousin, the Duke of Kent. The impressive display of pageantry at Horse Guards Parade saw over 1,400 officers and soldiers form the parade, together with two hundred horses. Meanwhile, over four hundred musicians from ten bands and Corps of Drums marched and played in unison.

Despite the torrential rain, the royals were in high spirits as they made their way back to Buckingham Palace in their carriages, with George, Charlotte and Louis waving enthusiastically to the crowds. Six-year-old Louis also made mum Kate giggle with his dancing during the ceremony.

Ahead of her appearance, the Princess shared a personal update about her progress in a letter released on Friday, she wrote: “I’m looking forward to attending the King’s Birthday Parade this weekend with my family and hope to join a few public engagements over the summer, but equally knowing I am not out of the woods yet.” Meanwhile, a spokesperson for Buckingham Palace said: “His Majesty is delighted that The Princess is able to attend tomorrow’s events, and is much looking forward to all elements of the day.”