40 Rules Celebrities Have to Follow When Meeting the Royals

According to The Lion King actor Billy Eichner, he received an email before the premiere with a list of all of the dos and don'ts about meeting the royals, including how to address them.

Every royal household has their own team of personal aides to help organize their appearances and packed schedules. This is not an easy job, which is why following instructions to a T is a must.

Most of the protocol is in place for safety purposes. Since the royal family's security detail has a big job to do, it's best to keep jokes to yourself when you're in the vicinity of the royal protective unit.

Protocol dictates that the Queen is supposed to be the last person to arrive at royal events. In fact, at Meghan and Harry's wedding, she arrived just five minutes before the bride.

Royal protocol really boils down to everything being up to the royal to initiate, especially physical contact. It's only after they extend the gesture that a celebrity may reciprocate.

A handshake is the standard greeting between a celebrity and a royal. According to the royal family's website, "there are no obligatory codes of behaviour when meeting The Queen or a member of the Royal Family," but many people prefer to simply shake hands "in the usual way."

If a celebrity and a royal have crossed paths numerous times, there's a good chance the formality of protocol will give way and they'll go in for a cheek kiss or hug. Still, the royal should initiate.

Per royal protocol, you're not supposed to speak to a royal until you are shaking hands. They're usually the first one to say hello.

Yes, we all know that the royal family has nicknames for one another (i.e. Prince Philip calls the Queen "Cabbage"), but for a celebrity to use one of these names is a huge breach in protocol. Beyoncé caused a flurry when she referred to Meghan Markle as "my princess" at The Lion King premiere, while Allison Janney has spoken about her slip-up of referring to Kate Middleton as "honey" at a BAFTA after-party.

Although many attempt the traditional greeting, royal protocol does not require women to curtsy when meeting a member of the royal family.

Out of respect for the Queen's highest-ranking position, a curtsy is the most common greeting. Even other members of the royal family have to curtsy to greet her. Angelina Jolie had no problem following this rule when she accepted an insignia of honor from Queen Elizabeth at Buckingham Palace in 2014.

The receiving lines for royals are very carefully planned and sometimes there's no time for plus-ones to say hello. That's why additional guests must stand behind the celebrity who was invited to the event.

Yet again, plus-ones are not on the top of the priority list during a royal event or visit. They should only speak if the royal initiates the conversation.

A trusted aide typically briefs the royals on who you are, what roles you've been in, and anything else notable beforehand. Let's just hope you haven't been cast to play a royal, which is what happened to The Crown's Matt Smith when he met Prince William.

Eichner described the rules around meeting Prince Harry and Meghan Markle as "very intense" and admitted that he had a hard time keeping up with all of the protocol. "I completely freaked out, although they were very, very nice and totally chill and down to earth, and lovely," the comedian said on Jimmy Kimmel Live.

Even Beyoncé was reportedly nervous to meet Meghan Markle. Royals deal with people trying to balance protocol and nerves all the time, so they're used to it.

According to CNN royal correspondent Victoria Arbiter, royals don't mind when a mistake is made. "It adds a bit of humor and it gives them something to enjoy and talk about," she told Insider. But there's a fine line between a case of nerves and being a goof. It's best to try to remain demure, as you wouldn't want the royals to think you were making fun of them.

The royal family has a whole host of words they don't use. For instance, the bathroom or toilet is always referred to as the lavatory. It isn't a requirement to use this lingo, but it may win you some good favor.

If you're ever in a room with the Queen (!!) follow her lead. When she stands, it's proper protocol to stand as well.

It's considered rude, and royal protocol forbids it. We're sure this rule has resulted in some interesting maneuvers in its time.

You can't just pop into an event to meet a royal, then bounce. Guests are expected to stay for the entire event, unless the Queen or a member of the royal family has given permission otherwise.

For security reasons, the royal family is prohibited from taking selfies with fans—even a famous fan.

Autographs are also out of the question. This rule is very practical and is in place to avoid forgeries.

The royal family is often surrounded by a crew of royal press correspondents, and they know the attire expected of them. When the Cambridge's journeyed abroad to the land of paparazzi (a.k.a. Los Angeles), they were so kind as to share their dress code with the American press. Hint: Jeans and sneakers don't make the cut.

Bright colors are reserved for the Monarch—she wears them so that she can stand out in a crowd. For instance, it's best to sport something more subdued than what Lady Gaga has on here.

If you're lucky enough to score an invite to a royal wedding, leave the wacky outfit choices for the Met Gala. At royal weddings, you're expected to wear traditional dresses in bold colors or subtle patterns paired with a hat, always!