Archie Mountbatten-Windsor, otherwise known as Baby Sussex, is due to be christened next month.
According to The Sunday Times, the latest addition to the royal baby line up will join the church in July, when he will be two months old.
Meghan Markle and Prince Harry have chosen St George’s Chapel for the christening.
The venue is special to the couple, as they chose the church to get married in last May.
Prince Harry was also baptised there back in 1984.
Baby Archie is set to wear a replica of the traditional royal baptism gown, which has been worn by 62 royal babies.
The original gown was made for Queen Victoria’s first child’s baptism in 1841.
The original gown was worn by Prince Harry and William, but the Queen had a new gown made in it’s image after the garment became fragile with age and use.
However, the Queen may not be in attendance to see Archie in the traditional gown.
The Queen is reported to have “prior commitments,” and so won’t be able to attend. She also previously missed Louis’, Prince William and Kate Middleton’s third child’s, baptism.