How do you address the queen? An archer or a bow should be enough, but some brave members of the audience are known for going for the handshake, such as Lady Gaga.
Few would dare to go in for a kiss, but that is exactly what Kate Middleton did at an event this week.
The long, willowing duchess of Cambridge stooped to kiss Her Majesty on both cheeks, causing a shock to the fans.
One of the most interesting things about the British royal family is their often strict attitude to tradition.
This includes walking in order of importance in public and arriving at places in ascending order of importance.
When greeting each other, the royals tend to bend or bow, depending on their gender and rank within the family.
However, this idea was recently turned upside down Kate Middleton and the queen and the Chelsea Flower Show.
Many of his fans, Prince William, 37, bowed to kiss his grandmother on both cheeks, and then his wife Kate Middleton did the same.
This is a rare royal sight, have the rules had a sneaky update?
One Twitter usage said: "What struck me was that the kiss came before the bow or bow. It must be how they normally do it.
"It's as if the formal part was a side issue. I think they forgot that the cameras were there. & # 39;
Another added: "Interesting cushion for courtesy. I thought it would be more formal at first. & # 39;
But someone said, "No, the family always does it that way. I've noticed that in the past from other members of the family."
Of course the queen, like our prince, is the one who makes a royal protocol at the end of the day.
What she says goes, so perhaps this will herald an era of less formal royal greetings in the future.
What are the rules regarding normal British? Contrary to what is often thought, there are no hard rules about how to address the royal family.
You can even name them by first name if you want, but they may not answer you.
The Royal Family website suggests how Britons want to speak with a prince if they want to follow tradition.
On the website it says: "There are no mandatory codes of conduct for meeting The Queen or a member of the royal family."
However, it describes traditional greetings for those who want to use them.
It is: "For men, this is a neck bow (only of the head) while women do a small bow. Other people prefer to simply shake hands in the usual way.
"On presentation of the Queen, the correct formal address is & # 39; Majesty & # 39; and then & # 39; Mrs. & # 39 ;, pronounced with a brief & # 39; a & # 39 ;, as in & # 39; jam & # 39 ;.
"The same rules apply to male members of the royal family, the title used initially being" UH "and then" Lord ".
"For other female members of the royal family, the first address is conventional & # 39; Royal Highness & # 39; and then & # 39; Mrs. & # 39 ;."
Kate Middleton was last seen at the Queen's annual garden party that took place at Buckingham Palace in London.
How did Kate Middleton become royal?
Kate Middleton, or Catherine, Duchess or Cambridge, was born on January 9, 1982 at the Royal Berkshire Hospital, Reading, England.
She was born as Michael and Carole Middleton, a former flight responsible and flight attendant. The couple founded a party supplies company in 1987, Party Pieces – now estimated at £ 30 million.
Kate has a younger sister, Pippa Matthews, 34, and a younger brother James Middleton, 31.
Kate and her family moved to Amman, Jordan in 1984, where the future Duchess was educated at an English-speaking kindergarten.
After moving back to Berkshire, the Kate family sent to the private school, St. Andrews School. She studied briefly at Downe House before going to Marlborough College where she boarded.
Before the university, young Kate attended the University of St. Andrews in Fife, Scotland. Here she received an undergraduate MA (2: 1 Hons) in art history.
Relationship with Prince William
Kate met Prince William when they were both studying in St. Andrews and both lived in St. Salvator's Hall. It is known that William Kate reportedly liked after wearing a see-through dress during a fashion show.
In 2003, the couple started dating and lived together during their second college year.
The couple split in April 2007, but they were back together in October.
Prince William introduced Kate Middleton with the engagement ring of his late mother Princess Diana in October 2010. The couple was on vacation in Kenya at the time.
On April 29, 2011, she married 26 million viewers to the event at Westminster Abbey.
Kate wore a Alexander McQueen dress worth £ 250,000 on the big day.
Kate took the title "Her Royal Highness The Duchess of Cambridge" and also became the Duchess of Cambridge on the day.