Celebrations for the royal baby - in pictures

An employee at the British-themed restaurant and grocery store Tea & Sympathy hangs a sign in the window in New York Photograph: Spencer Platt/Getty Images

Crowds gather to see the easel in the forecourt of Buckingham Palace announcing the birth Photograph: Will Oliver/AFP/Getty Images

Niagara Falls is illuminated in blue to celebrate the birth of a boy Photograph: John Normile/Getty Images

Members of the public gather outside Buckingham Palace after the easel was placed in the forecourt with the royal birth notification Photograph: Clive Gee/PA

People take pictures of the official notification Photograph: Sang Tan/AP

The CN Tower in Toronto, Canada, is illuminated in blue Photograph: Warren Toda/EPA

Lightning strikes behind the London Eye, which is coloured red, white and blue to mark the birth Photograph: Lewis Whyld/PA

The Peace Tower on Parliament Hill in Ottowa, Canada, is lit in blue to celebrate the birth of a boy Photograph: CHRIS WATTIE/Reuters

The Golden Jubilee bridges are illuminated in London Photograph: Will Oliver/AFP/Getty Images

Members of the public wear masks as they celebrate the announcement of the birth outside the Lindo wing of St Mary's hospital Photograph: Dave J Hogan/Getty Images

The BT tower announces the royal birth with the image of a stork carrying a baby bundle Photograph: Tom Dymond / Rex Features/Rex Features

Members of the media outside Buckingham Palace report on the birth Photograph: Peter Macdiarmid/Getty Images

The fountains in Trafalgar Square, London, are lit in blue Photograph: Neil Hall/Reuters

The Sky Tower and Cloud Event Centre are lit up in blue in Auckland, New Zealand Photograph: David Rowland/Rex Features