What are the signs that Kate Middleton may be pregnant with her fourth baby with Prince William? Body language expert Judi James has enumerated the clues she sees from the way the Duchess of Cambridge has behaved in recent weeks.

In an interview with Daily Star, James said that Duchess Kate has been touching her baby belly more often than usual. She also has that "brooding smile" that moms have for their children. 

During a recent engagement, Kate Middleton also beamed when she spotted and held a baby from the crowd. Further pregnancy rumors were sparked when a popular TV personality approached and rubbed her baby belly while talking to the duchess. 

Earlier, royal fans believed that Duchess Kate might also be giving out clues that she's pregnant when she emerged in public with new highlights and hairstyle. This happened when she brought her kids, Prince George, and Princess Charlotte, to their first day of school at Thomas Battersea with Prince William. 

According to fans, Kate Middleton also changed up her hairstyle a few weeks before the palace actually released a statement confirming her last pregnancy. She did this minor makeover for all of her three pregnancy announcements.

However, James said that, beyond these clues, she sees that Duchess Kate is growing more confident as a royal mom, especially when she is in engagements by herself.

The expert said that Kate Middleton is speaking more eloquently in public and delivering a firmer handshake among the people she encounters. These gestures show that she's ready to step up her responsibilities as a royal, as she could soon become the Queen of England.

While it's true that Duchess Kate seems to be touching her baby belly more often as a sign of protection for the speculated growing child insider her, it is still not a reliable clue, the expert said.

Instead, it is her smile that could be more telling of what's really going on, especially since Kate Middleton is beaming lately. For James, the smile could possibly indicate that there is a happy event to be expected soon. 

In addition to these clues, Duchess Kate seems to be managing to have three small kids pretty well. The Cambridge children appear delightful and relatively well-behaved that James said it wouldn't be farfetched if Prince William and Kate Middleton would be thinking of adding one more to the brood.