Kate Middleton might be pregnant with her fourth baby with Prince William. Royal fans are certain that she's with child because of one thing she didn't do during the Cambridge couple's last royal visit. 

On Twitter, netizens noticed how Kate avoided drinking a pint of beer on her trip to Ireland with Prince William. One commenter said that Kate just drank the foam from her Guiness, Ireland's famous beer. 

Another Twitter user also observed that Kate changed her hairstyle for the trip to Ireland. Royal fans believe that the Duchess of Cambridge has a new hairstyle just right before she announces her pregnancy in public. Apparently, this happened for all of her pregnancies. 

Judy James, a body language expert, also said that Kate likes touching her baby belly when she is on the family way and she did that while in Ireland. Most mothers usually do this gesture unconsciously as a way sign of protection and anticipation. 

James also noticed that Prince William seemed on the edge during their royal trip. He was showing signs of anxiety that could indicate his concerns for this fourth pregnancy. 

However, James also said that Prince William might be feeling anxious because Prince Harry was back in town at that time. It's unclear, however, if the Duke of Cambridge was able to have some personal time with his brother, the Duke of Sussex. 

Meanwhile, Kate admitted that all of three pregnancies were indeed a challenging experience. Since the Duchess of Cambridge has extreme morning sickness, she felt sick in the first few months of her pregnancy. 

However, Kate said that she loves going into labor because she practiced hypnobirthing. She revealed that she chose to do this for herself, without consulting Prince William, because the labor was something she could control while she cannot do anything about her morning sickness.

In the podcast Happy Mum Happy Baby, the Duchess of Cambridge said that hypnobirthing taught her the value of mind over body. She witnessed its power through meditation and breathing techniques, which she learned in a class. 

Meanwhile, in the midst of the coronavirus scare this week, Kate is set to be her children's teacher for the next few weeks. Prince George and Princess Charlotte's school have closed down for the rest of the term as the government of U.K. is trying to flatten the curve of the virus infection.

Thomas's Battersea told the parents that there will be online lessons for the children. Thus, they will need their parents to guide them to complete the class.