Gun salutes will sound across London today 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 in honour of the new addition to the Royal Family.
Gun salutes are fired for the birth of every prince or princess, no matter where their place is within the line of succession, the Ministry of Defence said. The last royal salute for a birth was for Princess Eugenie in 1990.
The King's Troop Royal Horse Artillery will ride past Buckingham Palace to Green Park where they will stage a 41 royal gun salute.