Kate Middleton celebrated her 40th birthday on January 9, 2021.

Her year has been filled with significant events, including family milestones and high-profile engagements.

She and her family relocated from London to Windsor.

Her youngest son, Prince Louis, started school, and her sister Pippa had her third child.

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

The Sussexes' revelations have painted Kate and Prince William unfavorably.

Queen Elizabeth II's death resulted in William and Kate being granted new titles and Prince George becoming second in line to the throne.

Kate has embraced her new role with ease, maintaining her focus on early childhood development.

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