Gun salutes will sound across London tomorrow to mark the birth of the royal baby.
The King's Troop Royal Horse Artillery and the Honourable Artillery Company will both carry out the ceremonial salutes.
Gun salutes are fired for the birth of every prince or princess, no matter where their place is within the line of succession, the last royal salute for a birth was for Princess Eugenie in 1990.
The King's Troop Royal Horse Artillery, wearing full dress uniform, will ride past Buckingham Palace to Green Park where they will stage a 41 royal gun salute.
The Honourable Artillery Company (HAC), the City of London's Army Reserve Regiment, will fire a 62 royal gun salute from Gun Wharf at the Tower of London at 2pm tomorrow.
Whilst a royal gun salute normally comprises 21 guns, this is increased to 41 if fired from a Royal Park or residence.
At the Tower of London a total of 62 rounds are fired as this also includes an additional 21 guns for the citizens of the City of London to show their loyalty to the monarch.
ITV News' Business Editor, Laura Kuenssberg, looks at how the royal baby could provide a much needed boost to the economy.
As news of the royal birth is celebrated around the globe a flood of souvenirs and memorabilia will go on sale to mark the occasion.
In London and around the world politicians, celebrities and members of the public have been celebrating the news of the royal birth.