Prince Harry can rule Great Britain, despite retiring from the royal family, and take the throne as the sole emperor.
However, if it were to happen, the Duke of Sussex can ascend the throne in case of a tragic event that can change the course of history.
As explained by royal expert, Iain MacMarthanne, "The 1937 Act determined that the Regent would be the person next in line who had attained their majority."
According to the Act in 1953, Prince Philip could become the Regent if the Queen passed away before Prince Charles reached 18.
"Therefore, in the event of Prince William having become king, and dying before Prince George had reached his majority, and there having been no further provisions passed by Parliament - such as in 1953, then the rather anomalous position would arise, given present circumstances, whereby Prince Harry, as next in line who had attained a majority, would become Regent," MacMarthanne added.
This means that the tragic demise of William could force Harry to wear the crown as regent until Prince George turns 18.
Princess Sophie’s visit comes days after King Charles announced his return to public-facing duties this week
Jennifer Lopez aims to follow Taylor Swift's footsteps to make her tour successful
Una and Ben tied the knot on June 30, 2012 in the singer's hometown of Tipperary in Ireland
Taylor Swift and Kim Kardashian "aren’t ready to forgive and forget" their years-long feud
Prince William's reaction to Harry's invitation
The 'Mission Impossible' star is reportedly trying to preserve his boyish look through facial procedures
