Prince Harry previously wore his military uniform while standing vigil over his grandmother's coffin.
The monarch issued a statement thanking well-wishes for their support and condolences after the death of his mother.
The queen's coffin is currently Lying in State at Westminster Hall. The state funeral's set for Monday.
ET breaks down the wealth of the late Queen Elizabeth II and her family.
ET breaks down the royal family’s biggest scandals, from Megxit to King Charles and Princess Diana’s divorce.
'The New Royals' author, Katie Nicholl, details why Queen Elizabeth's children and grandchildren stand vigil over her coffin.
Her Majesty died on Sept. 8. Her state funeral is set for Sept. 19.
A source tells ET, Palace officials have informed Harry he can wear his military uniform at the Vigil on Saturday at Westminster Hall.
'The New Royals' author, Katie Nicholl, explains how Queen Elizabeth was a dog lover her entire life.
The late monarch's grandchildren, including Prince William and Prince Harry, will do the same on Saturday.
Royal expert Katie Nicholl discusses the late Queen Elizabeth II’s will and how her assets may be divided amongst the family.
Royal expert Katie Nicholl explains how much the royal family is worth following the late Queen Elizabeth II's death.
Prince Harry will be allowed to wear his military uniform for Queen Elizabeth's vigil at Westminster Hall.
A source close to the royal family tells ET, Harry is not expected to do anything to mark his birthday except spend it privately.
