It's a boy! The world celebrates the birth of a new Prince

The whole world had been waiting with bated breath for the arrival of the royal baby, who is third in line to the throne, and that moment finally arrived at 4.24pm on Monday afternoon when Kate Middleton gave birth to a 'beautiful' little boy. 

Fountains in the British capital were turned blue, towers around the world lit up, and announcements were made on city monuments to honour the birth of a new Prince...

Town Crier Tony Appleton, who has received the coveted 'Town Crier of the Year' awarded by the International Town Criers Authority, is pictured here dressed in all his finery outside St Mary's Hospital announcing the birth of William and Kate's first child 

Crowds of royal well-wishers gathered outside St Mary's Hospital where Kate Middleton was admitted in the early hours of Monday morning. She gave birth at 4.24pm with Prince William by her side 

The BT tower announces the birth of a baby boy to Kate Middleton and Prince William: "It's a Boy" 

Elated crowds take photos of the easel that officially announced the birth of the son of The Duke and Duchess of Cambridge at Buckingham Palace on Monday evening 

Fountains in Trafalgar Square run blue to honour the birth of the baby that the world had been waiting for. Images of the blue fountains in Central London acted as a backdrop for news programmes breaking the news 

CN Tower in Toronto, Canada is lit up with blue lights 

The London Eye lights up the Thames with the patriotic colours of red, white and blue 

Niagara Falls is illuminated blue to celebrate the arrival of the 'beautiful' baby boy that the Duchess of Cambridge gave birth to on Monday afternoon. The baby, yet to be named, weighed in at 8lb 6oz 

Good news travels fast with London black taxis that celebrate the birth of the royal baby, who is now third in line to the throne