Dexter star Michael C. Hall set to join Netflix's The Crown playing President John F. Kennedy

They are the nearest thing to a royal couple America has ever seen.

So when telling the story of how the First Family of the US were introduced to the British monarch, it's important to get the casting just right.

Producers on the next series of the Netflix smash hit The Crown - which will document Queen Elizabeth II's reign over six seasons - have hired Michael C. Hall and Jodi Balfour to portray President John F. Kennedy and First Lady Jackie Kennedy, according to the Daily Mail.

A scene from Netflix's series, The Crown.

Production on the new run has already begun shooting and Hall and Balfour are in the UK filming now.

Claire Foy will make a triumphant return to the show as the Queen, alongside Matt Smith, who plays Prince Philip. 

The episode concerns a visit the Kennedys made to London in June, 1961. The visit was considered 'tricky' and 'sensitive' because, back then, divorcees were not invited to state dinners at Buckingham Palace.

Jackie had wanted her sister Princess Lee Radziwell, then on her second husband, to attend. The Queen was furious but reluctantly agreed.

John F. Kennedy and First Lady Jackie Kennedy pay a visit to the royal family in England. Photo / Getty Images

The episode will show that the Queen was clearly annoyed with Jackie Kennedy's behaviour and the two didn't get on particularly well.

However, when Jackie confided to the Queen that she found being on public view "exhausting", the Queen confided to her: "One gets crafty after a while and learns how to save oneself."

The two women met again nine months later, but it was just the two of them and the visit was less frosty. 

Actress Jodi Balfour will star as First Lady, Jackie Kennedy. Photo / Getty Images

One of the production executives told Mail Online that once Hall - best known for her role in Dexter - has been through hair and make-up, "he bears an uncanny resemblance to JFK".

The Crown has become a huge hit for Netflix with the drama winning top awards at the Golden Globes and at the Screen Actors Guild awards, plus Best Actress in the TV categories at the Globes and SAGs for Foy.

- Daily Mail