Rogue royal Prince Harry arrived at Westminster Abbey solo for King Charles III’s coronation service Saturday — the first time he has seen his father since the release of his bombshell memoir, “Spare.”

Harry, 38, arrived at the Abbey with his cousins, Princess Beatrice and Princess Eugenie, however, the flame-haired Duke of Sussex notably processed into the Abbey solo.

He will be seated in the third row beside Eugenie’s husband, Jack Brooksbank, and Princess Alexandra.

Before entering the church, Harry got a pat on the back from Beatrice’s husband Eduardo Mapelli Mozzi.

Harry’s wife Meghan Markle, 41, is at home in California with their two children, Prince Archie, who turns 4 today, and Princess Lilibet, 1.

Earlier this week, Harry and Meghan’s biographer Omid Scobie claimed that the pair — who have been estranged from the royal family since they stepped down as working royals in 2020 — waited “for some time” to even receive an invitation to the coronation.

“There was never any question on whether [Harry] would want to come or not. It was a question at one point on whether he would be invited, I think,” Scobie said of Britain’s “This Morning” on Wednesday.

Markle, 41, is content staying thousands of miles away in Montecito to “protect her peace” — but to the “relief” of the royal family, Scobie added.

Saturday’s festivities – which are set to be a more modern take on traditional coronation pageantry – is also the first time that Harry has seen his father, brother, and other relatives since the protocol-shattering release of his bombshell memoir, “Spare.”

The book, which came shortly after the Sussexes’ explosive Netflix documentary series, is said to have further alienated the couple from King Charles, Queen Camilla, and other senior royals.

Ahead of the ceremony this week, royal biographer Tom Bower warned that Harry could pull a last-minute “stunt” by backing out at the 11th hour.

“I suspect he’ll look for an excuse until the very last moment not to come,” he told GB News.