So what can they expect as first time parents? Check out the video above to hear expert advice from a doctor on how the couple can handle the first few days with their newborn.
It’s great information for any expecting parents, even if you don’t have the whole entire world watching on!
What is your advice for William and Kate in their first few days as parents? Tell us in the comments below or on Twitter @OKMagazine.
MORE VIDEOS YOU HAVE TO SEE: