A US magazine has come up with claims that Kate Middleton and Pippa Middleton are pregnant at the same time. The Duchess of Cambridge is allegedly excited about the pregnancy.

According to OK Magazine, the royal couple "want more kids" and have been trying to "expand" their family. It was recently revealed that Pippa is engaged to her boyfriend James Matthews.

The two sisters "love the idea of being pregnant at the same time. They're extremely close, and having kids the same age is something they used to talk about when they were little girls," an alleged source said.

Adding on, the siblings have apparently discussed baby names as well. The insider said: "Kate is leaning toward Alice, while Pippa likes Michael, after their father, or Tristan."

Kate has been repeatedly hit by pregnancy rumours since the birth of her second child in May 2015. In an interview with The Telegraph, Prince William had hinted that he and Kate could have a third baby in the near future.

"We've only just had the second one. You never know what is going to happen in the future," he said.