Kate Middleton
A magazine is claiming that Kate Middleton is allegedly expecting twin girlsGetty

A US magazine has come up with claims that Kate Middleton is expecting a third time. The Duchess of Cambridge is allegedly expecting twin girls.

Hollywood Life reported OK! Magazine as claiming that Kate, who welcomed Princess Charlotte on 2 May 2015, found out the news after undergoing a sonogram. An alleged source apparently said: "It's early days, but the buzz in the royals' inner circle is that Kate's pregnant again, and this time she's got not one but two buns in the over. They weren't even trying."

Prince William was apparently shocked by the baby news. The insider reportedly added: "He immediately called her and said, 'You're joking aren't you? We're not really having another baby right now.'"

Kate has been repeatedly hit by pregnancy rumours since the birth of her second child. In September 2015, reports emerged that she was in the early stages of pregnancy.

In an interview with The Telegraph, Prince William had opened up about his desire to expand his family. He said: "We've only just had the second one. You never know what is going to happen in the future."

Ahead of Princess Charlotte's birth, Kate's uncle Gary Goldsmith claimed that the couple will have a third child. He told Hello! Magazine: "I don't think they'll stop at two. So if it isn't a girl this time around, people shouldn't be too disappointed."

He added: "I'm sure there'll be a girl in the mix at some point. As long as the baby is healthy, that is the important thing."

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.