- Prince Harry arrived at King Charles' coronation service solo on Saturday.
- He was dressed in a morning suit with military medals pinned to his jacket.
Prince Harry arrived at the coronation service of his father, King Charles III, alone on Saturday, as his wife, Meghan Markle, and their two children, Prince Archie and Princess Lilibet, were at home in California.
Ahead of the historic service, Harry, 38, arrived at Westminster Abbey in London wearing a simple morning suit as requested by Buckingham Palace, rather than a military uniform.
Photos of the Duke of Sussex showed military medals pinned to his suit, however, in a nod to his military service.
Prince Harry, who served in the British Army for 10 years, including two tours of Afghanistan, has four medals: an Afghanistan Service Medal and Golden, Diamond, and Platinum Jubilee medals, which represent his service.
He entered Westminster Abbey alongside his cousins, Princess Eugenie and Princess Beatrice, and their husbands Jack Brooksbank and Edoardo Mapelli Mozzi, and appeared "relaxed," the BBC reported.
The coronation is the first time Harry has publicly been seen with the royal family since releasing his bombshell memoir "Spare" in January, Insider's Mikhaila Friel reported.
Harry is not playing a formal role in the service, as he is no longer a working member of the royal family.
Prince Harry and Prince Andrew appeared to be seated in the third row at the abbey as they waited for Charles to be crowned monarch.
Prince Harry arrived in London on Friday, but he will return to Los Angeles only a few hours after the coronation ceremony, the BBC reports, for his son Archie's 4th birthday.
The coronation ceremony on Saturday marks the formal start of King Charles' reign, the oldest royal to become a monarch.