The bride-to-be, who is believed will become Duchess of Sussex after her May wedding, will also be baptised and confirmed before the wedding.
The couple will be married at St George's Chapel, Windsor Castle, and the royal family will pay for the wedding, including the church service, the music, the flowers and the reception, the palace said.
The couple announced their engagement yesterday and their first interview as husband and wife to be aired last night.
In the interview the couple revealed how they met - saying they were set up by a mutual pal.
They also shared how Prince Harry popped the question to his surprised girlfriend, saying it was a cosy night at home in Nottingham Cottage, when Harry got down on one knee as they were preparing a chicken dinner.
“Then there were hugs and I had the ring in my finger and I was like can I give you the ring? She goes - oh yes the ring," said Harry.
Meghan, who is protestant, will be baptised and confirmed before the wedding, which will be paid for by the royal family.
The 36-year-old has already won over her soon to be family, with congratulations flooding in from family members since Clarence House made the official announcement.
The Duke and Duchess of Cambridge, Prince William and wife Kate have said they are "excited" for the couple.
"It has been wonderful getting to know Meghan and to see how happy she and Harry are together," they said in an official statement.
Prince Harry was reportedly impressed by Meghan's desire to do good in the world - a trait also attributed to his charitable late mother Diana - after he learned that the actress had travelled to Rwanda earlier that year to work on a clean-water project.
“They clicked from the outset on that first date, and one of the many things Harry really liked about Meghan was her innate kindness and her desire to make a difference and give something back,” said a friend of Harry's, according to Vanity Fair. “The fact that she had been to Rwanda working on a clean-water project really impressed him.”
Meghan is a global ambassador for World Vision and is a women’s advocate for the U.N.
Last year, in an essay written for women's magazine Elle, the actress revealed her plans for the future.
“I’ve never wanted to be a lady who lunches," she wrote, "I’ve always wanted to be a woman who works. And this type of work is what feeds my soul and fuels my purpose.”
In the piece Meghan referenced her upbringing, praising her mother for raising her as a 'global citizen' with 'eyes open to the sometimes harsh realities.'