The president and his wife were given a red carpet welcome by British Prime Minister Theresa May with a gala dinner at Blenheim Palace on Thursday night.
Trump has previously spoken about Prince William's wife Kate and his late mother Diana. "I met her on a number of occasions".
"You could see that suppressed dominance where he felt that he had to still motion to her".
Steve Kingstone, the Queen's Media Secretary, and Sally Osman, the Director of Royal Communications, have recently assisted the Royal Family with the media frenzy surrounding Meghan Markle's absence from her wedding to Prince Harry.
"If you're a guest of hers, she will put you at her ease", Alastair Bruce, a royal expert and ABC News consultant said.
Some 1.86 million people signed a petition at the June 2017 general election, wanting to prevent Trump from making a state visit "because it would cause embarrassment to Her Majesty the Queen".
In his book "The Art of the Comeback" Trump even said he wished that he was able to "court" Princess Diana, who died in a auto crash in 1997. "I really look forward to meeting her", Trump said.
It turns out there are no specific rules when it comes to meeting Queen Elizabeth II.
"Whatever we think of President Trump, he is the elected president of the United States of America and he has been invited to this country and he must be treated with great civility", Vickers said.
The President and first lady stood with their hands on the hearts as the band of the Coldstream Guards played the US National Anthem, the Queen solemnly standing with her hands clasped and head bowed. Royal commentator Victoria Arbiter, who works for CNN, Trump's least favourite news network, insisted he was on time.