Kate labour causes Twitter sensation
The announcement that the Duchess of Cambridge has gone into labour caused a flurry of activity on social media.
The topic was trending on Twitter, while hundreds of mothers logged on to parenting website Mumsnet to give their opinions on the news.
Broadcaster Piers Morgan tweeted: "Keep Calm...and Carry On. #Kate" and added: "My money's on an Australian cricket birth - all out by tea."
Labour's former deputy prime minister John Prescott joked: "Great to hear the Duchess of Cambridge has gone into labour. Is she an affiliated member?"
One Mumsnet user, writing under the name Iwaswatchingthat, posted: "I feel sorry for her. I really did not want anyone except my mum and dh (dear husband) to know I was in labour and just wanted to get on with it.
"It must be awful to think that the world is all imagining her huffing and puffing."
FrankellyMyDearIDontGiveADamn wrote: "Glad it's been confirmed. Soppy cow that I am I've just had a little cry over the news. In my defence I'm 8 weeks pregnant with my first and my emotions are all over the place!"
Another user, Gobbolinothewitchscat, added: "Seriously, it's a shame she's in the early stages. Best to stay at home as long as poss."
The Archbishop of Canterbury, the Most Rev Justin Welby, tweeted: "My thoughts and prayers are with Kate and the whole family on this enormously special day."
A host of celebrities shared the nation's excitement.
Former Spice Girl Melanie Brown took to Twitter writing: "Whoop whoop the royal baby is comming (sic) " while Kelly Osbourne wrote: "Its all so exciting The Royal Baby is on the way!"
Meanwhile, actress Joan Collins predicted the Duke and Duchess's first-born would be a princess, adding: "I bet it's a girl!
And singer Lily Allen joked: "The Duchess of Cambridge has shed half of her baby weight."