Archbishop of Canterbury Justin Welby has spoken of baptising Meghan Markle ahead of her marriage to Prince Harry.
With millions around the world watching on television, he is due to conduct the royal wedding in Windsor on May 19.
Ms Markle, a divorced actress, announced after her engagement to the prince that she would convert to Anglicanism.
The Archbishop carried out the ceremony at Chapel Royal, a small place of worship at St James’s Palace which is regularly used by The Queen.
He described it as a “great privilege”.
“It was very special, it was beautiful and sincere,” he said.
“At the heart of it is two people who have fallen in love with each other, who have committed their lives to each other with the most beautiful words and profound thoughts.”
The prince and Ms Markle are getting married at St George’s Chapel in Windsor on May 19. They are working with Mr Welby on preparations for the service.
He added: “You talk about what they want in the wedding, discuss it with the Dean of Windsor, it’s what you do for weddings, it’s just on an infinitely larger scale.
“You just focus on the couple. It’s their day. I’ve told them not to drop the ring and not to forget to get the vows in the right order.”
The Archbishop admitted that both those blunders happened at a recent marriage he conducted.
Mr Welby is understood to be the first Archbishop of Canterbury to preside over the wedding of a divorcee in modern times.
The 36-year-old American-born actress was married to actor and producer Trevor Engelson between 2011 and 2013.
Her engagement to Prince Harry, who is 33 and fifth in line to the British throne, was announced in November.