The tradition of garden parties atBuckingham Palacebegan in 1868 with Queen Victoria.

The practice has since been a fixture on the royal calendar (viaRoyal Collections Trust).

The events are held to recognize and celebrate public service.

Queen Elizabeth II smiling

Unfortunately,Queen Elizabethcould not attend the first two post-pandemic garden parties due to health setbacks.

However, the royal family has represented the queen at the events.

Here is a look at the regulations royals must follow during garden parties.

Royals at Buckingham Palace

Royal women are encouraged to wear skirts and dresses that must be at least knee-length and paired with pantyhose.

All royal women must also don a hat.

“But all that has changed, and hats are now reserved for more formal occasions.”

Kate and Prince William smiling

Royal men are supposed to give their wives a helping hand as they make their way down a staircase.

Are you wondering what they do with their hands?

According to royal etiquette expert Myka Meier, royal women are not allowed to lower their chins.

Kate Middleton shaking hands

Royals must properly shake hands

Yes, there are also rules for shaking hands.

At least 27,000 cups of tea are consumed at the lavish events (viaParade).

However, Barr was initially told that the queen would not accept the flowers as it would break protocol.

Kate Middleton sipping tea

What ended up happening is that the queen herself broke protocol and thanked Barr, taking the flowers herself.

However, in 2010,Prince Charlesbroke that protocol.

So, according to theTelegraph, Prince Charles found a piece of paper and wrote “Charles 2010.”

Queen Elizabeth II receiving flowers

Though a few royals have broken this rule occasionally, they are not supposed to take selfies.

While the public is allowed to shake hands with the royals, the royals themselves can only initiate it.

However, there are some foods that guests will never find at these events.

Prince Charles signing a visitor’s book

No alcohol, for example, is served at the queen’s garden parties (viaSurrey Live).

None of the foods at the garden parties contain any garlic and most likely do not heavily feature onions.

Kate Middleton smiling

Food from a garden party