THE HALO
Kate Middleton opted for "something borrowed" when it came time to pick her
wedding day headpiece – a 1936 Cartier halo tiara owned by Queen Elizabeth. Originally purchased by King George VI for the Queen Mother, the tiara was given to the Queen on her 18th birthday, and in turn, loaned to the bride for her April 29 nuptials.
THE TRIPLE CROWN
THE TRIPLE CROWN Though Kate didn't wind up wearing any of these glittering contenders (from left): The Duchess of Teck, the Strathmore and the Dehli Durbar, her step-mother-in-law, Camilla Parker Bowles, borrowed one from Her Majesty the Queen for a state banquet not long after her marriage to Prince Charles.
THE STRATHMORE
The Queen mum sported this simple yet stunning floral headpiece in 1928, a gift from her parents on the occasion of her marriage to Prince Albert two years earlier.
THE CAMBRIDGE LOVER'S KNOT
Queen Elizabeth gave this pearl-and-diamond tiara (seen on her in 1958) to Diana as a wedding gift, but experts tell PEOPLE they'd be surprised if the tiara will pass down to Kate.
THE DUCHESS OF TECK
This neoclassical crown once belonged to Queen Mary's mother, the Duchess of Teck, whose prized jewelry collection was passed down to her daughter upon her death in 1897
THE DUCHESS OF YORK
A fortuitous move by the royal family or foreshadowing? Sarah Ferguson's diamond tiara did not come from the royal collection – but was purchased for her from Garrard's, the crown jewelers of the time, for her July 23, 1986, wedding to Prince Andrew.
THE SPENCER
Kate won't get the Spencer family headpiece that Diana wore on her wedding day. But she might land the sapphire necklace William's late mum got as a wedding gift from the Saudi Crown Prince, which she wore along with her tiara during an official tour of Australia in 1983.
THE GIRLS OF GREAT BRITAIN & IRELAND
Worn by Queen Mary (left), it was passed to granddaughter Elizabeth (right) on her wedding day. Since then, the regal headpiece has been spotted on the Queen during her visit to Bangladesh in 1983 and, more recently, to a state dinner in Toronto.
THE 'WESSEX'
The Countess of Wessex Sophie Rhys-Jones wore a stunning yet modest tiara when she wed Queen Elizabeth's youngest son Prince Edward on June 19, 1999. The tiara, a wedding gift from the royal family, is believed to be made up of jewels once belonging to
THE SPENCER
Kate won't get the Spencer family headpiece that Diana wore on her wedding day. But she might land the sapphire necklace William's late mum got as a wedding gift from the Saudi Crown Prince, which she wore along with her tiara during an official tour of Australia in 1983.
THE DUCHESS OF YORK
A fortuitous move by the royal family or foreshadowing? Sarah Ferguson's diamond tiara did not come from the royal collection – but was purchased for her from Garrard's, the crown jewelers of the time, for her July 23, 1986, wedding to Prince Andrew.
THE DUCHESS OF TECK
This neoclassical crown once belonged to Queen Mary's mother, the Duchess of Teck, whose prized jewelry collection was passed down to her daughter upon her death in 1897.
THE CAMBRIDGE LOVER'S KNOT
Queen Elizabeth gave this pearl-and-diamond tiara (seen on her in 1958) to Diana as a wedding gift, but experts tell PEOPLE they'd be surprised if the tiara will pass down to Kate.
THE STRATHMORE
The Queen mum sported this simple yet stunning floral headpiece in 1928, a gift from her parents on the occasion of her marriage to Prince Albert two years earlier.
THE HALO
Kate Middleton opted for "something borrowed" when it came time to pick her
wedding day headpiece – a 1936 Cartier halo tiara owned by Queen Elizabeth. Originally purchased by King George VI for the Queen Mother, the tiara was given to the Queen on her 18th birthday, and in turn, loaned to the bride for her April 29 nuptials.
THE SCROLL
Elizabeth loaned her mother's tiara to sister Princess Margaret for a state banquet at Buckingham Palace in 1954. Nearly 20 years later, her daughter Princess Anne donned the elegant headpiece during a royal tour of Australia and New Zealand in 1970.
a dove gray, draped sheath by London-based designer Roksanda Ilincic, 
a lemon-yellow Jenny Packham dress,
10-gallon topper with a patterned Alice by Temperley London button-up,
topping her famous cream-colored Reiss dress with a maple-leaf themed fascinator 
