Here is a timeline of the pregnancy of Prince William's wife Catherine after she was admitted to hospital in labour on Monday.
December 3 -- Pregnancy announced as Kate enters King Edward VII's Hospital in London suffering from acute morning sickness.
December 4 -- Two Australian radio presenters make hoax phonecall to the private hospital, resulting in details of Kate's condition being divulged.
December 6 -- The Duchess of Cambridge leaves hospital after a three-night stay, saying she feels "much better".
December 7 -- Jacintha Saldanha, the Indian nurse who answered and put through the call, found hanged, having taken her own life.
December 16 -- Kate returns to public duties at the BBC Sports Personality of the Year awards.
January 11 -- She attends unveiling of her first official portrait, painted by Paul Emsley, at the National Portrait Gallery. The oil-on-canvas picture gets mixed reviews.
February 1 -- England's state prosecutors decided not to bring any charges against the Australian radio hosts, saying that "however misguided, the telephone call was intended as a harmless prank".
February 13 -- Anger in Britain as pictures of William and Kate holidaying on the Caribbean island of Mustique were printed in foreign publications, showing Kate in a bikini, her baby bump clearly visible.
March 3 -- Kate goes sledging in the Swiss Alps as she, William and his brother Prince Harry attend a wedding.
March 5 -- Britain's media gets carried away when Kate visits the fishing town of Grimsby, after a member of the public misheard her, thinking the duchess had stopped herself when about to say 'my daughter'.
March 17 -- Duchess makes first solo military engagement, presenting sprigs of shamrock at 1st Battalion the Irish Guards' annual Saint Patrick's Day parade.
March 20 -- Presented with a "baby on board" badge as Kate and Queen Elizabeth II visit Baker Street station to mark the 150th anniversary of the London Underground train network.
April 23 -- Kate plants a tree at vandalised estate in Manchester on Saint George's Day, England's national day.
April 24 -- The duchess wears a maternity dress for the first time in public as she visits the National Portrait Gallery in London.
April 26 -- Kate, William and Harry tour the Leavesden film studios, north of London, where they were presented with their own wands as they visited the Harry Potter sets.
April 29 -- She spends her second wedding anniversary visiting a children's hospice.
May 22 -- Kate attends a garden party at Buckingham Palace.
June 4 -- Duchess joins all the senior royals attending the service celebrating 60th anniversary of Queen Elizabeth II's coronation at London's Westminster Abbey.
June 13 -- Kate makes solo public engagement, launching a new ocean liner in the port of Southampton.
June 15 -- Duchess makes final public appearance before giving birth, attending Queen Elizabeth II's official 87th birthday celebrations.
June 19 -- Palace sources announce the baby, due in mid-July, to be born in St Mary's Hospital in central London, hopefully by natural delivery. They confirm the baby's sex will remain a mystery until it arrives.
July 22 -- Kate admitted to St Mary's at 6:00am (0500 GMT) in the early stages of labour. Her husband travelled with her for the short drive from Kensington Palace.