Royal watchers are on tenterhooks as they wait for the arrive of Princess Kate and Prince William's third child, now the Duchess has gone into labour.
It comes following the birth of George in 2013, and Charlotte two years later.
Here is how we have celebrated their births and first few years.
Kensington Palace has released a photograph of Prince George with his father Prince William ahead of the baby’s second birthday.
The prince joined members of the Royal Family on the balcony of Buckingham Palace to witness a flypast marking the Queen's birthday.
Prince William arrives at the hospital with Prince George to see the family's new addition.
The royal couple will spend a few weeks at their mansion in Norfolk with their children.
Three-day-old Princess Charlotte Elizabeth Diana meets her great-grandmother for the first time.
The pictures show the little princess being cradled by her big brother.
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