Kate Middleton will be 40 years old on January 9, 2021.

Her calendar has been jam-packed with significant events, such as family milestones and high-profile engagements.

Her family and she moved from London to Windsor.

Her eldest son, Prince Louis, began school, and her sister Pippa gave birth to her third child.

Prince George and Princess Charlotte attended public events with their parents, including the Queen's Platinum Jubilee.

The revelations about the Sussexes have painted Kate and Prince William in a negative light.

Following Queen Elizabeth II's death, William and Kate were given new titles, and Prince George became second in line to the throne.

Kate has settled into her new role with ease, remaining focused on early childhood development.

Kate has had a successful year despite enormous expectations, and it remains to be seen what the future holds.