Donald Trump must not shake hands with the Queen , talk about sex or kiss her, an etiquette expert warned today.
Diana Mather, a former newsreader who has taught communication skills to MPs and other politicians in the past 30 years, said the US President must abide to some strict rules in front of the monarch.
Speaking to BBC Radio Five Live today, she told how Mr Trump musn't kiss the Queen - a mistake which President Jimmy Carter made in 1977 when he kissed the Queen Mother.
"Foreigners don't have to bow, but it is quite nice to nod the head, " Ms Mather said.
"You can shake hands when the Queen offers her hand."
She outlined further tips the 72-year-old should remember.
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- Don't march ahead of the monarch - This would cause Mr Trump to have his back to the Queen, which is seen as disrespectful and "not good etiquette". The US leader should instead walk on an equal footing or slightly behind the Queen.
- Table manners: Mr Trump should only start eating when the Queen begins, Ms Mather added. He must finish when she finishes. His plate will be taken away, whether he has eaten everything or not.
- National anthem: When the national anthem is being played, Mr Trump shouldn't talk over it. "I'm afraid President Obama did on one of his visits," Ms Mather added.
- Sex, politics and religion: All these things should not be mentioned during dinner. "Sex should be confined to the bedroom. Religion can be quite inflammatory and politics, well, heads of state should not really interfere with other countries' politics," Ms Mather said.
It remains to be seen whether Mr Trump avoids any slip-ups during his visit.
He'll spend a great deal of time with The Queen during the three-day trip.
And the blunder-prone world leader has history for bad etiquette - including with the Queen.
When he first met the monarch, Mr Trump appeared to block her . The Queen, dressed all in blue, pointed where the American businessman should walk as they inspected the the Coldstream Guards.
But Mr Trump then walked in front of the Queen, with the monarch dwarfed by his large frame.
In April, the businessman addressed the monarch as 'Her Royal Majesty' instead of 'Her Majesty'.
One Twitter user said: "Her Majesty deserves much better than to have to entertain a totally incompetent fool and his third wife. What an embarrassment they are."
