These extravagant affairs draw plenty of attention right from the start.

There’s the exciting engagement announcement, invitations fit for a queen, and plenty of wedding prep.

Then, of course, there’s the fashion.

Prince Harry, Meghan Markle wedding day

Read on to learn the things royals can’t do at their weddings.

If you’re going to be a royal bride, your bridal outfit must comply with precise formal requirements.

According toCBS News, tradition will expect the lovely lady to wear a somewhat modest dress.

Princess Diana, Prince Charles on wedding day

In keeping with the modest theme, another no-no is bearing cleavage.

Perhaps unsurprisingly, the bride is also expected to wear white.

According toWWD, this royal trend was started by none other than Queen Victoria.

Jack Brooksbank, Princess Eugenie smiling

But, of course, these are not the only rules the soon-to-be royal Mrs. must follow.

According to theDaily Mail, a royal bride’s lovely bouquet must contain a sprig of myrtle per tradition.

Allegedly, this plant is said to be a symbol of luck and loyalty.

Prince William, Kate Middleton’s wedding cake, designer

Kate Middleton placed hers alongside sweet William, lily of the valley, and hyacinth.

Markle’s flowers also included sweet peas, lily of the valley, and jasmine.

No, when it comes to this particular dessert, the more decadent, the better.

Kate Middleton, Prince William’s balcony wedding kiss

According to custom, fruitcake has been the go-to flavor for royal weddings for centuries (viaVogue).

One of its claims to fame is its supposed long-lasting pre-refrigeration.

This memorable custom created a new standard for royal newlyweds.

Prince Harry, Meghan Markle holding hands

The couple instead shared a special public kiss right outside the church.

Traditionally, a royal groom wears military regalia instead.

According toBustle, this custom isn’t just because the soon-to-be-married royal was involved in the service.

Prince Harry, Meghan Markle’s wedding invitations

Recent royal grooms to continue this practice include Prince William.

The outlet also commented on his trimmed beard, which was a surprising addition.

Traditionally, royal wedding invites are crafted by an esteemed company like Barnard & Westwood.

Grave of the Unknown Warrior

She added that they received a second royal warrant for printing in 2012 by the Prince of Wales.

AsTown & Countrynoted, another highly-regarded establishment is Smythson, a British brand that currently has three royal warrants.

Other standard protocols include listing the royal participant first on the invitations.

Kate Middleton, Prince William announcing their engagement

One thing’s for sure: Royal invites always look stunning.

She captioned the image, “Today we remember and honour all those who sacrificed so much for us.

We shall never forget!”

Prince Harry, Meghan Markle walking together

“As with tradition, my wedding bouquet was laid on there,” she added.

Royals can’t get married without the queen’s permission

Forget eloping.

Although, according toBBC News, these royal rules have loosened up a bit in recent years.

Prince Harry waving, Prince William talking

The queen’s original blessing was just as formal, albeit a bit more personal.

If that couple also happens to be royal, the subject of religion might be a bit touchy.

Of course, since then, the law has changed thanks tonew rules.

Prince William, Kate Middleton exchanging rings

However, there are still some exceptions that royals must take into account.

After all, the queen is the head of the Church of England.

Regardless, the intimate ceremony only goes to show that tradition matters when it comes to royalty.

Prince Charles, Camilla Parker Bowles official wedding photo

“The best man or best men are officially called supporters,” says Koenig.

Similarly, Edward also had his brothers as his supporters on his own wedding day.

Kensington Palace confirmed the Duke of Sussex’s news viaTwitter.

Royal family leaves Westminster Abbey

According toBBC News, Prince William and Kate Middleton similarly followed this glamorous practice.

Wearing luxury wedding rings is one rule that royals clearly love to follow.

It’s a tradition that the newlyweds pose for an official portrait shortly after the wedding ceremony.

Since then, this practice has continued for over a century.

A royal wedding cannot just happen anywhere

Location definitely matters where royals weddings are concerned.

But, of course, Westminster Abbey isn’t the only place worthy of a royal wedding.

However, it’s also held many royal funerals as well.