Harry and Meghan have two engagements next week - the annual WellChild Awards, so expect Harry to ham it up with bunches of kids; and a Heads Together music event - we can only assume that Megs and her fashion aren't going to disappoint.
Ahead of the show, Miranda said it would be "fun and surreal" to see Harry and Meghan watch the extravagant, pompous king character during the biography of United States founding father Alexander Hamilton.
It was after the performance that Harry teased the audience as he took the stage to thank everyone for contributing to the organisation, of which he is a patron.
In May, Clare revealed she wanted Meghan's wedding dress to reflect her personality, describing the former actress as "warm, radiant and a really strong woman".
But the London theater-goers who chose Wednesday night to watch "Hamilton" at the Victoria Palace Theatre got something even more than Harry.More news: Amazon hits $1 trillion market value milestone
Before his speech, Harry briefly sang "You'll Be Back", the song performed by King George, who is his sixth great-grandfather.
The official Twitter account of the Kensington Palace, the official residence of the Duke and Duchess of Sussex, also posted a photo of the entire cast of "Hamilton" with the royals. He only sang the first line of the song "You'll Be Back" from the musical written by Lin-Manuel Miranda, but that didn't matter, the crowd went absolutely wild.
Creator Lin-Manuel Miranda also proved a star turn as he told the audience that he came up with idea of putting King George in his show while he was on honeymoon.
Virtually £300,000 used to be said to were raised by mark sales and donations for the charity that works to toughen prospects for kids and kids plagued by HIV in southern Africa.
He told them: "I don't know how you guys do it every single night, over and over again".
The Duchess is set to touch on her new role with Prince Harry, following his appointment by Her Majesty as the Commonwealth Youth Ambassador previous year, with the Duke of Sussex also being featured in the two-part series.