Kate Middleton is once again surrounded by pregnancy rumors with this one move she made in Ireland. The Cambridges kicked off their royal visit in Dublin, and there was this one activity that they did that convinced the many that Prince William's wife might be pregnant with their fourth baby.

On the first day of their royal tour, the royal couple went to the Home of Guinness in Dublin and drank from the pint Guinness. The Duchess of Cambridge also took a sip that might be an indication that she was not pregnant.

However, one Twitter user noticed that Kate Middleton only tasted the foam and didn't really drink, which might be a sign that she is heavy with a child, Express noted. "Go on have a real slurp, it will do you good," the netizen advised.

Prince William and the future queen consort now have three children, Princes George, Princess Charlotte, and Prince Louis. They are often at odds of having another child. They are currently at 2-1, the bookmaker Coral wrote.

Kate Middleton, on the other hand, is odds on at 8/11 to announce their fourth baby before the year ends at Ladbrokes. Alex Apati said that all attention might be on Prince Harry and Meghan Markle today, but Kate could soon get all the eyes back on her with the announcement of a new royal baby that might happen soon.

Meanwhile, a body language expert, Judi James, revealed the major sign that Kate Middleton does when she is indeed pregnant - and it's not touching her belly. She explained that holding the stomach is quite a common gesture for expectant moms, and she also does this all the time even if she is not pregnant.

So, it is not a telltale sign if Kate Middleton has a bun in the oven. It may be the reason why pregnancy rumors are often thrown at her. But in truth, she is the hardest person to predict.

James added that Kate Middleton's body language, even if she is already pregnant, doesn't change. She often leaves her coat hanging open, and she won't rub her belly continuously, which Meghan Markle always does. For her, it is business as usual.

So, what's the best way to tell if Kate Middleton is pregnant? It is when she goes out of the spotlight. As she suffers from severe morning sickness every time she gets pregnant, Prince William's spouse tends to vanish from the royal circle too quickly. If this happens, it may be safe to confirm that she is already pregnant with baby number four.