King Charles III has come a long way since his “pampered prince” days.

However, meeting a royal comes with plenty of do’s and don’ts.

If you happen to come face to face with King Charles III, you should avoid doing certain things.

King Charles looking at the camera

Anything but ‘Hi Prince’" (viaExpress).

Of course, there will still be times when people forget to use his full title.

This time, Charles was able to laugh it off.

King Charles waving

“In [the] future, he should call him, ‘Your Majesty,'” he added.

Knowing what to say and what not to say is an important piece of the puzzle.

Some American vocabulary thought of as polite is actually quite offensive to royalty.

King Charles smiling in top hat

Instead, simply use the word “sorry.”

Some even refer to lower-middle-class suburbs as ‘Pardonia.'"

Most importantly, refrain from speaking to him first if you want to follow the rules of decorum.

King Charles laughing with Amal and George Clooney.

He continued, saying, “Royals are supposed to begin the conversation.

You’ll notice they start it, so they can be in control of the time.

They have to take control.”

King Charles and Queen Consort, Camilla laughing

However, you won’t be sent to the tower if you don’t follow this rule.

Rather, it’s simply polite and traditional.

Little ones are also seemingly exempt from this guideline.

King Charles shaking Geri Halliwell’s hand

But how can you choose the perfect gift for a literalmonarch?

First and foremost, it needs to fit the occasion (viaCNN).

Small gifts like flowers, consumable goods, and other presents under 150 are appropriate.

French President bows to King Charles

In fact, you should wait for him to initiate contact.

Naturally, mess-ups do happen.

When singer Ed Sheeran met Charles back when he was a prince, he committed a royal breach.

King Charles and Queen Consort, Camilla smiling in hats

“Apparently, I did a big faux pas,” Sheeran told NBC (via People).

“I shook his hand and then grabbed it and you’re not meant to do that.”

Whatever you do, though, don’t recreate the Spice Girls’ first meeting with Charles.

Fans taking a selfie with King Charles

Halliwell then went a step further and touched his backside.

For men, it is customary to bow.

“It is not compulsory but it can be seen as churlish to refuse,” Harrold explained.

King Charles and Justin Trudeau standing together

If you were to meet King Charles III, you would want to follow suit.

Garden partiesallow many to rub shoulders with Charles and other royals, as 30,000 people are invited each year.

If you happen to score an invitation, don’t dress too casually.

“The expectation is formal day wear,” Hume confirmed.

An outfit you’d wear as a wedding guest would be appropriate here.

“Trainers [sneakers]?

Usually a no-no,” Hume said.

When in doubt, Hume says to dress up rather than down.

However, that doesn’t mean they like it.

“I heard him tell people, ‘I’m trying to give up selfies.’

He wants to meet people, and it irritates him getting camera phones shoved in his face.”

Simple enough, right?