The original gown has been worn for all Royal christenings since, including The Queen, her children and her grandchildren.
While it might not be a big deal for women to cross their legs usually, it's actually seen as a breach of protocol for Duchess'.
It is a replica of a 19th century one used for most of Queen Victoria's children which is now too delicate to wear.
Meghan Markle is in Dublin for a whirlwind two days of engagements.
Hundreds of well-wishers turned out to catch a glimpse of Prince Harry and his wife, the former actress Meghan Markle, as they made their first overseas walkabout in Dublin Wednesday. Her Royal Highness opted for a custom black canvas heel in a silhouette that bridged the understated and the sexy.
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After starting off the day in a gray Roland Mouret dress with her signature boat-neck style to meet the president of Ireland, Michael Higgins, the Duchess of Sussex slipped into a more casual ensemble for her second event of the day.
But the real English Breakfast tea here is, that Martin didn't create this look for her.
According to Charal, handwriting is a "paper mirror" of our personalities at a given time.
Meghan's father Thomas Markle also weighed in on the baby debate, telling Good Morning Britain last month, "When she met Harry and she spoke about how much she loves him".
Princess Charlotte even managed to give her signature royal wave on the way to the reception (despite the aforementioned giant piece of paper in hand), meaning she hasn't forgotten her duty to the people and the royal crown.
During her visit, the Duchess was caught up in a row about Ireland's recent vote to legalise abortion after Irish Senator Catherine Noone of Fine Gael said Meghan was "pleased" with the result. And also very nice to know that he didn't bore you senseless'.