Kate Middleton, the Princess of Wales, is back to work in Windsor.

Surprisingly, there are reports that she is expecting her fourth child.

The good news has been shared with King Charles by Prince William and Kate.

Even the late Queen Elizabeth knew about the pregnancy.

After spending time with her family, Kate has resumed her royal duties.

Her previous royal duty was on October 15.

Recently, she hosted the Chief Executive of the Royal Foundation at Windsor Castle.

Together, Kate and Prince William already have three children: Prince George, Princess Charlotte, and Prince Louis.

It's fascinating to know that Kate is a patron of the Royal Foundation of the Prince and Princess of Wales.