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The attires worn by the Royal Family have fascinated many – from the Queen’s rainbow coats to the Duchess of Cambridge’s tiaras.

But devotees of the royals will have noticed that they have never seen Prince George in a Spiderman T-shirt or Catherine in a tracksuit.

There are etiquette rules governing what members of the Royal Family wear to public engagements – from gloves, to military uniforms, and skirts instead of jeans.

Here we uncover the dress code the royals aim to follow.

When the Queen will wear a hat

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The Queen has become known for her bright and bold hats which she is often pictured wearing while performing official engagements.

Dress code etiquette is to say that wives wear hats for formal events, mentions Diana Mather, a senior tutor for The English Manner etiquette consultancy.

“Up until the 1950 s dames were very seldom insured without a hat as it was not considered ‘the thing’ for dames to present their mane in public.

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

One of the Queen’s hats became a hot topic on social media when she officially opened Parliament last month.

Using the hashtag # QueensSpeech, many users compared her floral blue hat to the EU flag.

Why Prince George always wears shorts

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Unlike many three-year-olds, Prince George has yet to be seen wearing a T-shirt of his favourite Tv character or a even pair of trousers.

Experts say this is because it is royal tradition for young princes and princesses to be formally garmented when they are in public.

Instead, Prince George is much more likely to wear a pair of smart shorts and a shirt.

Etiquette expert Grant Harrold, known as The Royal Butler, tells the tradition dates back to the times of breeching in the 16 th Century.

He said: “This saw young boys wearing garments or dresses until the age of eight, if not before.

“Thankfully in late 19 th Century and early 20 th Century this developed into shorts. This tradition is carried on by the Royal Family to this very day.”

The Queen and her gloves

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No self-respecting dame would be seen without gloves, mentions Mr Harrold, who tweets etiquette tips via @TheRoyalButler.

Gloves were traditionally considered a fashion item but likewise had a practical intent too – helping stop germs being spread from person to person.

With the Queen shaking hands with hundreds of people every year, they serve as a style statement but likewise safeguard her from bacteria.

“Let’s not forget she doesn’t always wear gloves when meeting people, therefore it depends on what she is wearing, where she is and what she is doing, ” Mr Harrold adds.

Keeping it casual

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In private, who knows whether the Duke and Duchess of Cambridge lounge around in matching onesies.

But there is still a dress code had acceded to when dressing casually and being seen in public.

For ladies, a smart day dress or trousers teamed with a coat or cardigan is considered acceptable while for gentlemen it is a blazer with a collared shirt and chinos.

Prince William and Catherine tend to follow these traditional rules but sometimes let their modern boundary slip on a dress-down day – by wearing jeans.

“Many places will not allow jeans as they are still seen as very casual wear, so it is better to play safe for both sexes, ” tells Ms Mather.

“But if the duchess is outside walking the dogs for example, then jeans are fine.”

Trooping the Colour

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Fans of the Royal Family will not have failed to notice that the Queen’s wardrobe embraces all the colourings of the rainbow.

She is reported to have once said: “If I wore beige , nobody would know who I am.”

Mr Harrold credits the monarch’s personal assistant Angela Kelly for the bold colouring she often wears while on duty.

It is said that the Queen wears bright colours to ensure members of the public stand the chance of seeing her through the crowds.

“She adoration colour and to know each other will stand out – good for her I mention, ” tells Ms Mather.

Military style

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Prince William and Prince Harry have both served in the armed forces and have been pictured wearing military uniforms.

The royals often wear their uniforms when they represent their regiments at occasions which are military affairs, such as the Trooping the Colour or services to honour British troops.

Prince William served in the RAF but also holds the name of Colonel of the Irish Guards – which has a striking cherry-red uniform.

He chose to represent the regiment by wearing its colouring for his 2011 wedding to Catherine.

The crown jewels

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The Duchess of Cambridge is unlikely to have been seen in public wearing a tiara before her wedding.

This is because they are reserved for married women or representatives from the Royal Family.

Tiaras are traditionally worn at formal events, specially when the code is evening dress, says Ms Mather.

“The old regulation is that hats are never worn indoors after 6pm, because that is when the ladies changed into evening dress, and tiaras and the family jewels would come out.

“Flashy diamonds and tiaras are not worn during the day, and merely married dames wear tiaras.”

Mr Harrold adds: “For marriage dames it was a sign of status and would demonstrate you two are taken and not looking for a husband.

“For the gentleman it was a clear sign not to make advances toward the lady in question.”

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