Royal experts reveal Prince William's determination to protect Prince George, Princess Charlotte and Prince Louis from the "heir and spare" dynamic that affected his relationship with Harry.

Royal biographer Robert Hardman weighed in on how the Prince and Princess of Wales are handling Princess Charlotte’s reality of being third in line to the throne.

The royal couple is said to be treading carefully with Charlotte’s upbringing in light of the Duke of Sussex’s candid account of life as a “spare."