Is Kate Middleton pregnant with baby No. 4? All the clues that may point to another pregnancy

Can we expect a pregnancy announcement soon from the Cambridge family?

One body expert claims that Kate Middleton is pregnant with baby number four and that a palace announcement is imminent. Aranzazu Santos López took to Spanish TV show Aquí Hay Madroño to reveal her suspicions, which are based on two major clues: the duchess' hair and her work schedule.

López mentioned that Kate in the past has changed her hair before making her pregnancy announcements, adding bangs before announcing her pregnancy with George and a shoulder length-do before announcing her pregnancy with Prince Louis.

And most recently, the 38-year-old debuted drastically lighter locks to drop Princess Charlotte off for her first day of school at Thomas's Battersea.

"Look at these recent images of the return to school day. Look at Kate’s hair. It has a different air. Highlights or new colour, we don't know yet, but it's lighter, like a dark blonde," the expert explained. "Every time the Duchess of Cambridge changes her look, she announces that she is pregnant within a few days."

The second clue that makes López think Kate is expecting has to do with her experience with hyperemesis gravidarum, a severe case of morning sickness which she has had with all three of her pregnancies.

Continued Lopez, "I have another clue. Kate's agenda is locked. She will take time off, which could mean she is pregnant, considering that her previous pregnancies have been complicated."

The palace has not yet commented on the swirl of rumors, but we'll have to wait and see!