Britain's Prince William and Catherine, the Duchess of Cambridge
Prince William and Catherine, the Duchess of Cambridge, stand with pints of Guinness as they visit soldiers of the 1st battalion Irish Guards in their canteenReuters

Speculations around the Duchess of Cambridge's third baby have started doing the rounds again. According to reports, Kate Middleton is pregnant with her third baby and she is determined to have four children.

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Star magazine has claimed that Kate is pregnant and this year Prince William and she will welcome their third child. Sources said the royal family is already aware of the happy news.

According to the magazine, Prince George revealed the big news to Queen Elizabeth, Prince Charles and other members of the royal family. George practised his announcement with mother Kate the night before Commonwealth Games baton launch last week.

"It ended up being incredibly sweet. George approached his great-grandmother and exclaimed that he had a secret to share. The room went quiet when he said that 'mummy has a new bubby in her tummy!' She was delightedly hugging Kate, who was beaming from ear to ear," a source told Star Magazine.

Prince George
Prince George reacts to bubbles being blown by his father the Duke of Cambridge.Reuters

"William knew that as soon as he returned to England he'd be in for a serious scolding. He was on his way back and getting ready to face the music, but it's no surprise that all was forgiven and forgotten following George's absolutely adorable announcement," the source added.

William was apparently worried about his trip, as he was spotted dancing with a mystery woman. Soon after that, there were reports that Kate is humiliated with the whole drama, but the magazine claims that it was the Duchess, who insisted William to go on a boy's vacation.

"It was actually Kate who insisted he go on one last boys' vacation before focusing on the new baby. It's just a shame it looked like he was having too much fun and absconding from his duties. Who could have known he may have simply been celebrating his wife's third pregnancy?"

Meanwhile, Gossip Cop has debunked Star Magazine's claim and said that the royal couple is not expecting the third baby.

Prince George and Princess Charlotte
Prince George and Princess Charlotte are seen in this undated handout photo taken by the Duchess in mid-May at Anmer Hall in Norfolk and released by the Duke and Duchess of Cambridge.Reuters