Prince Charles will walk Meghan Markle down the aisle as she marries his son Prince Harry on Saturday in London.
In a statement, Kensington Palace said: "Ms Meghan Markle has asked His Royal Highness The Prince of Wales to accompany her down the aisle of the Quire of St George's Chapel on her Wedding Day.
"The Prince of Wales is pleased to be able to welcome Ms Markle to The Royal Family in this way."
The news comes after it was announced that Meghan's father would not be in attendance due to health issues.
On Thursday, Meghan addressed the speculation around her father's health and role in her wedding, with Kensington Palace posting a statement on her behalf.
"Sadly, my father will not be attending the wedding. I have always cared for my father and hope he can be given the space he needs to focus on his health," she said.
"I would like to thank everyone who has offered generous messages of support. Please know how much Harry and I look forward to sharing our special day with you on Saturday."
A statement from Ms. Meghan Markle: pic.twitter.com/TjBNarmuBU— Kensington Palace (@KensingtonRoyal) May 17, 2018
Coverage of the Royal Wedding kicks off on RTÉ One at 11.30am on Saturday, May 19.
Guests, including an Irish student, will begin to congregate around the chapel on the grounds of Windsor Castle early in the morning, with Prince Harry and his best man Prince William set to arrive at 11.45am. Queen Elizabeth II will be the last member of the Royal Family to arrive, expected to get there for 11.55am.
At 11.59am, Meghan will arrive at the chapel with her mother and her bridesmaids and page boys. Among the bridal party are Prince George, Princess Charlotte, and a number of Prince Harry's godchildren, Meghan's god children, and children of their closest friends.
The ceremony itself will start at 12.00pm, with the carriage procession through the streets of Windsor kicking off at 1.05pm.
The newlyweds will then attend a lunchtime reception hosted by the Queen, later in the evening they will attend another reception, this time hosted by Prince Charles.