Australia and New Zealand PMs welcome the royal baby

Australia's Prime Minister Kevin Rudd and his New Zealand counterpart John Key have welcomed the arrival of the royal baby.

Mr Rudd said it was a time for "rejoicing", while Mr Key said it was a "momentous day" for the Duke and Duchess of Cambridge.

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World celebrates prince's birth

The royal couple have been sent messages of congratulation from around the world. US President Barack Obama called the birth a "joyous occasion".