This week, Meghan Markle will finally marry Prince Harry in the Royal Wedding of the century!
And while we can't wait to see the couple cement their love for one another at St George's Chapel in Windsor Castle, avid royal watchers are joyfully speculating over what sparkling tiara Meghan Markle will decide to wear from the breathtaking royal jewellery collection.
There's something so magical about seeing a royal bride in a tiara because let's face it, these days you'll be hard pressed to find The Firm drenched in their bling, save for very important occasions.
While we'd like to think Meghan, Kate and co. can simply dip into The Queen's bottomless jewellery box whenever they fancy, it's sadly not as simple as that!
Royal etiquette has adapted with the modern times and these days, tiaras are only worn for weddings, state banquets or official receptions.
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Keen to steer their image away from decadence and indulgence, you'll be more likely to see The Queen horse riding in jodhpurs, Kate recycling a dress several times over and Princess Charlotte in Prince George's hand-me-downs.
"The first time a tiara is worn is by the bride on her wedding day. It signals the crowning of love and the loss of innocence to marriage. The family tiara is worn by the bride and from that moment onwards it was the groom's jewellery she was expected to wear. It was a subliminal message that she had moved from her family to another," Geoffrey Mun explains in his book Tiaras - A History of Splendour.
"Nowadays few adhere to this protocol, even if they are aware of it."
In fact, Kate Middleton has only ever worn a tiara in public seven times - including her wedding day.
Taking cues from the Duchess of Cambridge, we'll most likely only see Meghan Markle wear a tiara a handful of times in public over the coming years, too.
As we countdown to see what tiara Meghan Markle will wear on her wedding day, we round up every single photo of Duchess Catherine in a tiara since she joined the Royal Family and look to Kate's past choices for some clues!
1. The Cartier Halo tiara, April 2011
Kate Middleton's "something borrowed" for her 2011 wedding day happened to be this incredible creation made of diamonds and platinum, which The Queen very kindly lent to her.
King George VI commissioned Cartier to make it in 1936 as a gift to his wife, Queen Elizabeth (aka The Queen Mother). She handed it down her daughter, Princess Elizabeth, for her 18th birthday and it's been in The Queen's collection ever since.
However we can confidently rule out Meghan choosing this piece for two reasons, A) she wouldn't want to recycle the same look at Kate on her own wedding day, and B) the Cartier Halo tiara is currently on display at the National Gallery of Australia in Canberra from May 30th until July 22nd.
The good news is, if you want to see it in real-life - now you know how!
WATCH: Kate and William exchange vows. Post continues after the video...
2. The Lotus Flower tiara, December 2013
Kate waited two whole years after tying the knot to wear another tiara, this time stepping out in the Lotus Flower (also referred to as the Papyrus Tiara) for a diplomatic reception at Buckingham Palace.
Fingers crossed we don't have to wait this long to see Meghan in one again!
Tucking the glittering number neatly on top of her cascading tresses, its papyrus-shaped folds and diamond and pearl accents utterly popped.
This particular number originally belonged to The Queen Mother before The Queen inherited it.
3. The Lotus Flower tiara, October 2015
Kate's ravishing red look stole the show at Buckingham Palace's state banquet to celebrate Chinese President Mr Xi Jinping's visit in October 2015.
Sitting pride of place on her swept back locks was the trusty old Lotus Flower.
4. The Cambridge Lover’s Knot tiara, December 2015
It's somewhat of tiara staple for Kate now, but the first time we ever saw her don the iconic Cambridge Lover's Knot tiara was back in 2015 for the diplomatic reception at Buckingham Palace.
The showstopping tiara is an heirloom headpiece which The Queen inherited it from her grandmother Queen Mary, before giving it to Princess Diana as a present on her wedding day in 1981.
It was worn by Diana on many occasions but returned to the monarch when Diana and Charles divorced in 1996.
5. The Cambridge Lover’s Knot tiara, December 2016
It doesn't get much better than this! A princess, her prince and a sparkling tiara in all its glory.
The 36-year-old once again sported the The Cambridge Lover's Knot masterpiece for the 2016 annual diplomatic reception.
6. Cambridge Lover’s Knot, July 2017
In July last year, the mother-of-three dusted off the Cambridge Lover's Knot for a third time when she attended a lavish state dinner at the palace held in honour of King Felipe VI and Queen Letizia of Spain.
Dripping in a ruby and diamond necklace on loan from the monarch, Kate completed her look with a custom-made lilac Marchesa dress.
WATCH: The Royal Family arrive to the state dinner. Post continues...
7. The Cambridge Lover’s Knot, December 2017
December 2017 marked the seventh time Kate has ever worn a tiara in public, and if you ask us she should do it more often!
The Duchess of Cambridge clearly has taken a liking to The Cambridge Lover's Knot and opted to wear it to the 2017 diplomatic reception.
Although only the top of her gown could be seen as she arrived in a chauffeur-driven Bentley, fans were given a glimpse of her embellished white dress.
The 36-year-old opted for an elegant chignon so her impressive diamond jewels could take pride of place.