Honestly, if I had access to a diamond-studded tiara, I'd wear that thing every day. If I were the Queen, I'd wear my crown everywhere - even to take out the trash.

Why? Because it's awesome. And, also, why the heck not?

It's a fabulous fashion accessory and anyone who wears one instantly looks like a million bucks (probably because the real things are actually worth close to that much money).

So, why doesn't The Duchess of Cambridge wear her dazzling tiara at every chance she gets?

Obviously she wore a beautiful tiara to her wedding. It was a delicate piece that complimented her stunning lace gown so beautifully!

On numerous occasions she was spotted wearing Princess Diana's favorite tiara: Queen Mary's Lover's Knot tiara. This stunning tiara has been in the royal family for over 100 years!  

At a state dinner, she wore Princess Margaret's favorite : The Lotus Flower Tiara.

So why doesn't she wear it all the time? Find out on the next page!

Even if she wanted to wear the tiara full-time, Royal protocol dictates that The Duchess of Cambridge simply can't.

According to senior tutor for The English Manner etiquette consultancy, Diana Mather, it is unlikely that we'll ever see Catherine wearing a tiara in public.

Even while engaged to Prince William, she did not wear a tiara before the wedding because they are reserved for married women or members of the Royal Family.

Now married, the Duchess of Cambridge will wear a tiara at a formal event - especially when the dress code is evening wear.

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

Mather told BBC, "Flashy diamonds and tiaras are not worn during the day, and only married ladies wear tiaras."

Etiquette expert, Grant Harrold, also known as The Royal Butler, added: "For married ladies it was a sign of status and would show you were taken and not looking for a husband."

He added, "for the gentleman it was a clear sign not to make advances toward the lady in question."

So there you have it - Royal protocol! If you were Queen, would you kick this rule to the curb?

[h/t BBC]