Kate Middleton and Prince William
Kate Middleton and Prince William are parents to Prince George and Princess Charlotte Reuters

A US magazine has come up with claims that Kate Middleton is expecting a third time. The Duchess of Cambridge is allegedly excited about the pregnancy.

The cover of Life & Style magazine claims: "Kate's joy. Pregnant again!" The magazine stated: "Whoops! Kate's unexpectedly expecting — and she's thrilled," "Baby No. 3: How she broke the happy news to William" and "Now they're moving into a new house!"

Kate Middleton pregnant
Life & Style is claiming that Kate Middleton is pregnant again Life and Style magazine

"Kate has told her immediate family she is in the early stages of pregnancy," an alleged source said, according to Gossip Cop. "To be honest, it was an accident and total surprise. They hadn't wanted a third child for a couple of years, but now that it has happened, she and William are thrilled."

The royal couple are "already excitedly discussing names for the little prince or princess. The favorites are Charles or Philip, after William's dad and grandfather, and Caroline, after Kate's mother [Carol]. They don't care if it's a boy or a girl because they already have one of each."

Kate has been repeatedly hit by pregnancy rumours since the birth of her second child in May 2015. Meanwhile, Prince William talked about fatherhood in a documentary with TV personalities Anthony McPartlin and Declan Donnelly. The 33-year-old royal said: "I'm a lot more emotional than I used to be, weirdly. I never used to get too wound up or worried about things. But now the smallest little things, you well up a little more, you get affected by the sort of things that happen around the world whatever a lot more, I think, as a father."

"Just because you realise how precious life is and it puts it all in perspective," he explained. "The idea of not being around to see your children grow up and stuff like that. I remember my mother and father taking us to charities and organisations and showing us what goes on. And I think seeing such a broad spectrum of life is really important from a young age to give you a bit of perspective.

"You don't just live in a palace, it's very important you get out and you see what goes on in the real world," he added.