First things first, as head of The Firm Queen Elizabeth must be informed about any royal birth before the news is broken to the media.
Once HRH and the rest of the immediate family have been notified, an official announcement will be made via easel in the forecourt of Buckingham Palace signed by Meghan's doctors.
As reported by Hello! magazine, the notice will give the gender, time of birth and a sentence about the wellbeing of the Duchess and Baby Sussex.
In eras gone by, home births were the delivery of choice for members of the royal family.
But just as she did with many traditions, Princess Diana set a new trend by giving birth to Princes William and Harry at the exclusive Lindo Wing of St Mary's Hospital in London.
Kate Middleton followed this example by welcoming her three children at the Lindo, but it has recently emerged that Meghan has shunned this historic choice by opting for a maternity unit closer to their Windsor home.
Not one to conform to the status quo, Meghan is also said to have very different ideas about how she will dress her first-born child.
Watch this expert explain why the Duchess will break royal tradition on the style front, too!
Traditionally, fathers were banned from the royal delivery room but this rule was relaxed after the birth of Prince Charles.
Prince William was by Kate's side during all three of their children's births, an example Harry is sure to follow.
Fans are eager to find out who the Duke and Duchess of Sussex have entrusted with the responsibility of being their first-born's godparents.
Potential candidates for the esteemed positions include George and Amal Clooney, Priyanka Chopra, Serena Williams and Harry's cousin Zara and her husband Mike Tindall.
Others have suggested Princess Diana's godson Jake Warren and his wife Zoe could make the cut, as well as Meghan's longtime pals Jill Roth, Jessica Mulroney and Misha Nonoo who is widely reported to have introduced the Sussexes.