Princess Charlotte celebrates her ninth birthday on Thursday.
The Prince and Princess of Wales are expected to release a new image of their daughter on social media to mark the occasion, just like they did for Prince Louis’ birthday last week.
Kate said in her video message to the nation announcing her diagnosis that she and William “have been doing everything we can to process and manage this privately for the sake of our young family”.
Third in line to the throne Charlotte attends the co-educational private Lambrook School near Ascot in Berkshire, and loves dancing, especially ballet and tap.
The youngster was spotted reminding George to bow to the coffin of their late great-grandmother the Queen at her state funeral, and she kept Louis in check during a Trooping the Colour by placing her hand over his to calm his over-enthusiastic waving to the crowds from the carriage.
This time last year, Charlotte was preparing for her grandfather the King’s coronation, where she processed through Westminster Abbey hand in hand with Louis.
The dress was McQueen with an ivory silk crepe cape, decorated in rose, thistle, daffodil and shamrock motifs – emblems which also featured on her mother’s dress.
Charlotte was last seen in public on Christmas Day when she walked to church with her family and second cousin Mia Tindall at Sandringham.
William and Kate released an unedited new photo of Louis straight to social media, rather than under embargo to the press as was the tradition, to mark his sixth birthday on April 23.
Charlotte Elizabeth Diana, then a princess of Cambridge, was born in the Lindo Wing of St Mary’s Hospital in Paddington, London, at 8.34am on May 2 2015, weighing 8lb 3oz.