Kate Middleton is already a mother of three young children, six-year-old Prince George, four-year-old Princess Charlotte, and one-year-old Prince Louis. Although she had a hard time during her pregnancies, the Duchess of Cambridge had always been open to having a big family.

With that said, pregnancy rumors became a part of Kate Middleton’s journey. Even though Prince William, his wife, and the Buckingham Palace have never really kept these pregnancies a secret, the public is always interested to know about it before the official announcement.

And since the Kate Middleton pregnancy rumors have been going on for a while, people have started to look for signs to confirm the speculations. According to Royal expert Aranzazu Santos López, the Duchess of Cambridge is giving two clues, unknowingly or purposely, that she is expecting baby number four.

“I have two clues that make me think Kate is pregnant. We would love to see that confirmed,” she said. “What are those clues? Look at these recent images of the return to school day. Look at Kate’s hair. It has a different air. Highlights or new color, we don’t know yet, but it’s lighter, like a dark blonde.”

Santos Lopez explained that, every time Kate Middleton is pregnant, she usually changes things up. "Every time the Duchess of Cambridge changes her look, she announces that she is pregnant within a few days,” she shared.

The Duchess of Cambridge added bangs to her hairstyle when she was pregnant with Prince George, and cut her hair short when she was pregnant with Prince Louis. With a slightly shorter hair now with a lighter highlight, the royal expert believed that it was a clear sign of pregnancy.

“And I have another clue,” Santos Lopez added. “Kate’s agenda is locked. She will take time off, which could mean she is pregnant, considering that her previous pregnancies have been complicated.”

Kate Middleton has a very tiny frame; so, any unusual bulge in her abdomen area would be pretty easy to spot. When the Duchess of Cambridge’s abdomen looks much bigger than usual in one of her outings with her children, New Idea claimed, it was her baby bump.

The tabloid also shared two photos of Kate Middleton’s alleged baby bump then added the headline, “Kate Finally Confirms Baby No. 4. First Baby Bump Pics!” Although there is a tiny bump that can be seen in the photos, it is quite hard to confirm if it is, indeed, Kate Middleton's baby bump.