Princess Kate's two-word instruction to Princess Charlotte during Trooping the Colour

Kate, Princess of Wales, made a brief return to public life to celebrate the King's official birthday with the rest of the Royal Family.

wales family on buckingham palace balcony

Kate gave firm instructions to Charlotte and her brothers on how to behave (Image: Getty)

Kate, the Princess of Wales, gave strict instructions to Princess Charlotte, as they enjoyed Trooping the Colour, according to a lip reader.

The Princess of Wales briefly returned to public life to support the King and her husband, Prince William, at the celebrations for His Majesty's official birthday.

The royal observed the proceedings from the balcony of the Duke of Wellington's former office overlooking Horse Guards Parade with Charlotte and sons Prince George and Prince Louis.

The foursome could be seen enjoying themselves as they watched the ceremony but lip reading Nicola Hinckley claimed the Princess gave clear instructions to her daughter and her brothers.

Ms Hinckley told The Mirror that Kate appeared to say: "Keep smiling. And stay here for one moment."

kate speaking to princess charlotte on balcony

Princess Charlotte stood right in front of her mother as they watched the flypast (Image: Getty)

The expert noted the Princess of Wales's instructions came shortly after Kate appeared to tell George and Louis: "You stay there, OK?"

The event marked the first public event Kate has attended since the start of the year.

In January, Kensington Palace announced she would take a break from official duties after undergoing abdominal surgery. 

Two months later, Kate personally confirmed she was receiving "preventative chemotherapy" in a heartfelt video message to the public.

After weeks of speculation, the royal confirmed on Friday she would be attending Trooping the Colour but said she is "not out of the woods yet."

Kate said she has "good days and bad days", and has started taking meetings when she feels up to it.

Princess Kate shows behind-the-scenes of Trooping of the Colour

The Palace reiterated her appearance at the event on Saturday should not be considered a sign she will be resuming her official duties.

The Princess of Wales also thanked the public for the outpouring of support shown to her and the Prince of Wales since she announced her cancer diagnosis.

Her brief return to public life was greeted with loud cheers as she was spotted riding the Glass Carriage to Horse Guards Parade with George, Charlotte and Louis.

She later was reunited with William, the King and Queen on the balcony of Buckingham Palace to watch the RAF Red Arrows's flypast.

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