Meghan Markle, 38, and Prince Harry, 35, had a brief yet intense dating phase before they tied the knot on May 18, 2018, in St. George’s Chapel at Windsor Castle in the United Kingdom. The Royal couple wanted their big day to have an intimate feel despite their Royal status.

Their wedding, according to reports, broke a lot of traditions such as holding the ceremony at St. George’s Chapel instead of using the Westminster Abbey as their location just like Prince William and Kate Middleton and Prince Charles and Princess Diana's weddings. Meghan and Harry, also, did not have the iconic balcony kiss. But, did you know that one element of the wedding could have had put Princess Charlotte’s life at risk?

Express reported that the crowns made for Princess Charlotte and other bridesmaids were made of flowers that can be deadly to kids. The publication noted the stunning flower crowns, made by florist Philippa Craddock, was a replication of Meghan Markle’s wedding bouquet. The Duchess' floral bunch included astrantia, jasmine, forget-me-nots, sweet peas, astilbe and lily of the valley.

Prince Harry and Meghan Markle Prince Harry and Meghan Markle are pictured walking through the walled public Andalusian Gardens on Feb. 25, 2019 in Rabat, Morocco. Photo: Facundo Arrizabalaga - Pool/Getty Images

Gemma Finch, who is a florist at Brown’s London, told the publication that the flower crowns had “spray of flowers, lily of the valley, lisianthus and cuscus.” Lily of the valley is said to be a highly poisonous woodland flowering plant and could be deadly when ingested.

“Lily of the Valley toxicity makes it unsafe to have around children and pets,” Bonnie Grant said. “The plant is so dangerous that ingestion could result in a trip to the emergency room, or in rare cases death,” the urban agriculturist added.

Since Meghan Markle and Prince Harry’s niece, Princess Charlotte, was so young, having Lily of the Valley on her head can be considered a dangerous move. Aside from the Duchess of Sussex, other Royal brides who used the poisonous flowers include Kate Middleton, Duchess of Cambridge; Princess Eugenie, Princess of York; and Camilla Parker-Bowles, Duchess of Cornwall.

Meanwhile, there have been reports saying that Meghan was denied one thing she wanted on her big day with Prince Harry: wearing a diamond and emerald tiara. It was said that the tiara is a very significant aspect of any royal wedding. However, the former “Suits” star’s alleged request was denied because of two primary reasons: 1) its colored gemstones do not look good with her simple white Givenchy dress; and 2) the accessory, reportedly, came from Russia, which would not have been suitable for a British royal wedding.