The fourth appeared to be a detailed sketch of Prince Louis with his eyes closed – with many social followers guessing it be drawn by the Princess, who studied History of Art at university.

The Princess of Wales and her three children showcased their artistic talents to support Kate's latest early years initiative earlier in February. Kate alongside Prince George, 11, Princess Charlotte, ...

As well as Queen Elizabeth II and her sister, other outfits are on show including those worn by the Queen Mother and sketches for dresses to be worn by the late Diana, Princess of Wales.