Princess for mum Kate during their Trooping the Colour carriage ride has been revealed by a lip reader. The appearance of Kate alongside Charlotte, and Prince Louis sparked cheering when they first left Buckingham Palace in a carriage for the King's official birthday parade.

The children and their mum waved to the crowds from their carriage as they followed the King and Queen down the Mall to Horse Guards Parade - with Louis flashing his toothless grin. In one sweet moment, Charlotte could be seen turning to her mum with the pair chatting and joking as they travelled down the route. And according to a lip reader, the young princess had a pressing question for her mum.

READ MORE:

According to professional lip reader Jeremy Freeman, she said: "Who is it?" asking about someone in the crowd, with Kate replying. Charlotte then appeared to say: "Oh brilliant" before the pair exchanged a giggle.

The adorable moment occurred before the King and Queen led the onto the balcony at Buckingham Palace to watch a flypast of military aviation.

They stood alongside the Prince and , their children Prince George, Princess Charlotte, and Prince Louis, the Duke and Duchess of Edinburgh, and the Duke and .

The royal family members could be seen chatting to each other as the planes flew over the palace. Spectators in The Mall cheered as the Royal Air Force Aerobatic Team – the Red Arrows – flew overhead releasing colourful trails of red, white, and blue smoke.

The force used a blend of sustainable aviation fuel and normal jet fuel for their engines, as well as a renewable biofuel for the smoke trails. The royal family waved one last time at the crowd before retreating back into the Palace.

Meanwhile, Kate returned to a major Trooping the Colour duty alongside he King and Queen today. In her role as as Colonel of the Irish Guards she took her seat on the dais alongside the King and Queen to watch the spectacular military parade at Horse Guards Parade.

Last year she sat upstairs in the Major General's office to watch the display with her children after marking her return to duty following the start of her cancer treatment. Today, Kate arrived at Horse Guards Parade today in an Ascot Landau carriage alongside her three children.

She dazzled in a turquoise Catherine Walker coat dress, a hat by Juliette Botterill, her Irish Guards Regimental brooch and a pair of earrings that belonged to the late Queen before taking her seat on the parade ground.

At last year's Trooping the Colour, Kate made a triumphant return, making her first official public appearance since she revealed she had received a cancer diagnosis. She took pride of place on the balcony for the RAF flypast standing shoulder-to-shoulder with the King.

It came two months before she later revealed that she had finished her chemotherapy treatment and in January of this year she revealed that she is now in remission.