But it seems as Archie is creeping closer to his first birthday, the Sussex's are thinking about giving him a sibling.
While at a surprise visit to an Army wives coffee morning at a Remembrance event, Prince Harry and Meghan sat down to chat with mother-of-two Susie.
It's reported that Harry asked her what it is like to have a second baby.
She said: "Harry was really quite interested in how things were with second children as well, because we both have older children.
“We were trying to encourage him to have a second baby,” she added.
Some royal commentators have noted the questions might be a hint that Harry and Meghan are ready to have a second child.
The Duke of Sussex has previously spoken about how the couple want to have maximum two children in order to minimise their family's environmental impact.