The son of Prince Harry and Meghan Markle is expected to be baptised later on Saturday.
The Archbishop of Canterbury will conduct the rite during a private ceremony.
Close family and friends will attend the christening, which will take place inside a private chapel at Windsor Castle.
However the Queen will not be there.
Archie Harrison Mountbatten-Windsor was born on May 6 this year.

Reopening of Gaza's Rafah crossing expected Monday
Winter storm death toll in United States reaches 90
Pakistan says 145 militants killed after attacks in Balochistan
Israeli strikes kill 26 in Gaza, health officials say
