A source tells ET that the bride-to-be has "normal last-minute nerves" ahead of her May 19 nuptials, but luckily, her mother, Doria Ragland, will be by her side in the days before she says "I do."
According to our source, Doria arrived in London this week, and Meghan's father, Thomas Markle, is expected to arrive by the weekend.
"Doria will be here to help Meghan relax in the last days before she becomes a [royal]," the source says, adding that one of Meghan's closest pals, Jessica Mulroney, will arrive next week to "help Meghan out with last-minute touches ahead of her big day."
In addition to meeting Meghan's new family, the source tells us Doria will also get to see her daughter's wedding dress for the first time, since "Meghan had her final fittings a weekend and a half ago."
Kensington Palace announced last week what roles Meghan's parents will play on her special day. "On the morning of the wedding, Ms. Ragland will travel with Ms. Markle by car to Windsor Castle," the statement revealed. "Mr. Markle will walk his daughter down the aisle of St. George's Chapel. Ms. Markle is delighted to have her parents by her side on this important and happy occasion."
Earlier this week, a rare home video of Meghan from 1990 surfaced that showed the former Suits star enjoying playtime with her friends. She adorably mimicked Queen Elizabeth II, even wearing a crown as she gave orders to her pals.