While she may be one of the most famous women in the world, that didn't stop Kate Middleton from secretly completing two days of work experience at Kingston Hospital Maternity Unit in London.
The Duchess of Cambridge - who is a mum to Prince George, six, Princess Charlotte, four, and Prince Louis, one - spent time training in the maternity ward to learn more about children's early years of development and how experiences between birth and five years affect us as adults.
As part of her Early Years Project, the Duchess reportedly spent time in the antenatal, postnatal and labour wards of the busy maternity unit, which delivered more than 5,900 babies in 2018.
The royal mum's work was subtly mentioned by Kensington Palace in the Court Circular on November 28, which reveals the activities the royals have completed each week.
"The Duchess of Cambridge, Joint Patron, the Royal Foundation of The Duke and Duchess of Cambridge, today completed two days with Kingston Hospital Maternity Unit in London."
Prince William and Kate's own children were delivered at the Lindo Wing at St Mary's Hospital.