It was announced on Monday evening that Kate had given birth to a little Prince weighing 8lb 6oz on Monday afternoon at around 4:24pm.
As champagne is poured and the nation rejoices, many remain in position to witness the moment that the Duke and Duchess of Cambridge step out with their newborn baby.
Journalists from around the world are in prime position to catch the first glimpse of the Duchess when she emerges from the Lindo Wing at St Mary's hospital. Scores of fans have followed suit, some of whom have been camping outside the famous hospital's entrance or come bearing gifts for the Prince or Princess.
It is expected that the new parents will emerge with their little bundle of joy on Tuesday after spending the night in the hospital.
HELLO! Online looks at some of the exciting scenes in the British capital building up to the announcement of the little one's announcement.