Princess Kate was last seen out in public on Monday when she attended the annual Order of Garter ceremony in Windsor, where she was seen chatting with Sophie, the Duchess of Edinburgh, and watched other royals, including William take part in the procession in his Garter robes and plumed hat.

Kate, who shares three young children with William, has made a gradual return to public engagements this year since announcing in January that she is in remission from cancer. Kate has not shared details of the type of cancer with which she was diagnosed, though she has shared she underwent chemotherapy treatment.

The Duchess of Cambridge is a regular on royal engagements and is often probed about her life as a senior royal – but one cheeky child had no idea who she was