Meghan Markle may break another royal tradition with her wedding bouquet.

Princess Diana, Kate Middleton and Queen Elizabeth all opted to have white flowers on their bouquet when they walked down the aisle on their big day. However, the "Suits" star may choose flowers of another color. A florist told Express that Markle's wedding bouquet will likely include peonies because her wedding date is its prime season.

"May is the prime season for peonies, and I would not be at all surprised if they feature heavily in the floral content," said Anna-Liisa Evans.

When Markle still had her own social media account, she posted photos of these flowers. Peonies are among her favorites.

Although Markle will have her own choice of flowers, she is expected to follow a particular royal wedding tradition with her bouquet. Markle has to include a piece of myrtle in it.

Myrtle is a flower that represents love and marriage. Every royal bride since Queen Victoria's wedding in 1840 follows this tradition. The small flower is special as it is grown from Queen Victoria's bush in the Isle of Wight, a gift from Prince Albert's grandmother.

Markle and Prince Harry have been reportedly putting their personal touches on many aspects of their wedding. While they are mindful of some wedding traditions from their elders, they will also make their own rules on their big day.

For instance, the "Horrible Bosses" actress is expected to give a speech at the reception of her wedding. According to an insider, Markle will take it as an opportunity to thank Queen Elizabeth II, Prince Harry, her family and friends.

According to an expert doing so is "breaking centuries of royal tradition." "Historically at a royal wedding reception, the bride’s father would speak on her behalf, and the other speeches are reserved for the groom and the best man," Amber Harrison said.

Although it's bending a major royal tradition, Harrison recognized Markle's plan as "refreshing" and "not surprising" considering how many times Prince Harry's fiancée has broken traditions.

Meanwhile, Anne Chertoff, trend expert at Wedding Wire, thinks that Markle's choice is normal considering her nationality. According to Chertoff, American brides make a toast and give a speech at their wedding receptions.