There’s already enough anticipation regarding the designer of Meghan Markle’s wedding dress, but over here at Over The Moon, we’re also counting down the days to find out which royal tiara the actress will wear on her big day. After all, what’s a princess without her tiara?

If we’re looking for the previous British royal wedding for clues, we know that for Kate Middleton’s wedding to Prince William, the future Duchess of Cambridge was loaned the Cartier Halo tiara by Queen Elizabeth II. The platinum and diamond tiara was made in 1936 by Cartier and was a gift from King George VI to Queen Elizabeth (a.k.a. Queen Elizabeth II’s mother). It was later given to Queen Elizabeth II on her 18th birthday and is reportedly the Queen’s first tiara. But turns out, it’s impossible for the Queen to loan it out again for Harry and Meghan’s wedding, as the tiara is on display at an exhibition at the National Gallery of Australia until July 22.

So what tiara could Meghan Markle potentially wear? While there are plenty of options in the royal family’s vault, we’re betting it comes down to three options. There’s the delicate Strathmore Rose Tiara, which was made from a diamond and pearl necklace that once belonged to Queen Mother, and was later given to Princess Margaret. It features diamond wild roses set on gold and silver, and rumor has it, since it has been kept in the vault for so long (it hasn’t been used since the 1930s) that it might make a comeback at some grand event. (Wink, wink.) 

Then, for a more sentimental option, there’s the Cambridge Lover’s Knot, one of Princess Diana’s favorite tiaras. She wore it often and the Queen had even loaned it to her for wedding to Prince Charles, even though Diana ended up wearing a family heirloom crown instead. After Diana’s death, the tiara wasn’t worn by anyone else again, until 22 years later when Kate Middleton wore it to a diplomatic event. We’re sure this is one option Prince Harry would certainly cherish.

And while that might seem like an obvious choice, don’t knock out The Queen Mary’s Fringe from the running yet. This striking tiara, a straight series of diamond made by Garrard in 1919, is a favorite amongst the royal family, as it was worn by both Queen Elizabeth II and Princess Anne on their wedding days. Perhaps the tradition will continue on with Prince Harry’s bride?