Prince Charles will walk Meghan Markle down the aisle on Saturday when she marries Prince Harry, Kensington Palace has said.
Ms Markle’s father, Thomas, is unable to attend the wedding, after undergoing heart surgery.
The Prince of Wales was “pleased to be able to welcome Ms Markle to the Royal Family in this way”, the palace added.
Ms Markle’s mother, Doria Ragland, will take her daughter to the wedding at St George’s Chapel in Windsor.
Ms Ragland will meet the Queen for the first time at Windsor Castle later, accompanied by Meghan, 36, and Prince Harry, 33.
She has already been introduced to Prince Charles and Prince William.
Mr Markle had been due to arrive in the UK earlier this week, but became caught up in controversy over the apparent staging of photographs with the paparazzi.