Archie Harrison Mountbatten Windsor has only been seen publically once when the couple revealed him to the world at Windsor Castle last month.
Born on 6th May, Archie will be two months old when he will be baptised at St George's Chapel next month.
The couple married there last year and Harry was also baptised there in 1984.
Archie is the Queen's eighth great-grandchild, however, the Queen won't be attending, due to prior commitments.
Meghan's mother, Doria Ragland is expected to return to the UK for the baptism.
The event is expected to be led by the Prince of Wales, the Duchess of Cornwall, and the Duke and Duchess of Cambridge.
The ceremony is thought to conducted by the Dean of Windsor, the Rev David Conner and the Archbishop of Canterbury, Justin Welby.
Stay up to date with the latest news stories from a Christian perspective. Sign up to our daily newsletter and receive more stories like this straight to your inbox every morning.