The Duke and Duchess of Cambridge are seen with Prince George and Princess Charlotte in the garden at Sandringham House.

The Duchess of Cambridge holds Princess Charlotte in the Drawing Room at Sandringham House.

The Royal Family is seen here.

Britain's Prince William and Kate, Duchess of Cambridge and their newborn baby princess, pose for the media as they leave St. Mary's Hospital's exclusive Lindo Wing, London, Saturday, May 2, 2015. Kate, the Duchess of Cambridge, gave birth to a baby girl on Saturday morning.

Britain's Prince William, center right, and Kate, Duchess of Cambridge, center left, pose for the media with their newborn daughter outside St. Mary's Hospital's exclusive Lindo Wing, London, Saturday, May 2, 2015. The Duchess gave birth to the Princess on Saturday morning.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn daughter at St Mary's Hospital on May 2, 2015 in London, England.

Britain's Prince William and his son Prince George wave as they return to St. Mary's Hospital's exclusive Lindo Wing, London, Saturday, May 2, 2015. William's wife, Kate, the Duchess of Cambridge, gave birth to a baby girl on Saturday morning.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn daughter at St Mary's Hospital on May 2, 2015 in London, England.