This combination of file pictures created on May 18, 2018 shows Britain’s Charles, Prince of Wales, attending a reception in the Villa Massena garden, in Nice and .Britain's Prince Harry's fiancee, US actress Meghan Markle, attending a reception for Women's Empowerment at the Royal Aeronautical Society in central London on on April 19, 2018. Pic/AFP

Prince Charles will step into the role of Meghan Markle's father and walk her down the aisle at the St George's Chapel when she marries Prince Harry tomorrow, Kensington Palace announced today.