In the past, she's expressed interest in "classic and simple" designs.
The trio all wore similar vibrant purple attire, which is the colour that has always been associated with royalty and, in the past, was only allowed to be worn by close members of the Royal Family, Harper's Bazaar reports.
So, perhaps we could see a little Markle sparkle on her gown after all.
Harry and Markle are set to Wednesday on May 19 at Windsor Castle, and it is speculated that William will be right by his brother's side, serving as best man.
Meghan Markle and Prince Harry attend Christmas Day Church service at Church of St. Mary Magdalene, Dec. 25, 2017 in King's Lynn, England.
It's well-known that having a best man is not a tradition in the royal family, but because this wedding won't be traditional, who's to say that there won't be best man (or as the British say, a supporter) by Harry's side?
In a new interview with InTouch magazine, Samantha Grant dished about Prince Harry's fiancée's childhood, went into detail about their family drama and shared never-before-seen photos from before Markle was famous.
William's children, Prince George and Princess Charlotte, are expected to play a role in the wedding, as they did a year ago at the wedding of Kate's sister, Pippa Middleton, to financier James Matthews. "Hailing from London myself, I'd have to represent and play some music from United Kingdom artists such as Stormzy, Tinie Tempah and Jess Glynne".
The Duke of Cambridge was asked about his role in Prince Harry's May 19 wedding by United Kingdom radio host Roman Kemp on Wednesday. He filed bankruptcy in 2016 and moved to Mexico to live a reclusive life. "I'm very delighted. I think they're [a] very good match". Of course I'd love to be there.
But there's another reason Prince William may not serve as best man at his brother's forthcoming nuptials. Riley, who also maintains the brows of Princess Beatrice, says the first step to getting Markle's brows is to grow them out before shaping the brows as straight as possible "making sure that the tail ends are lifted upwards".