Kate Middleton might have just confirmed the truth about all those rumors that she is pregnant with baby number four. In a recent royal engagement, the Duchess of Cambridge wore an outfit that showed off her flat baby belly and slim frame. Thus, shutting down talks that Prince George, Princess Charlotte and Prince Louis could have another sibling.  

According to The Sun, Duchess Kate paired her body-hugging Warehouse top with a Jigsaw culottes that had a wide waistband for her visit to the Natural History Museum. The fall-inspired wardrobe demonstrated the duchess' chic style, per usual, but it also revealed that she's not heavy with a child at all.  

Rumors have been swirling about Duchess Kate's fourth pregnancy since the royal family's polo match last July. Eager fans were sure that she had a baby bump and was often resting her hand over her belly.  

If this was correct, then, the duchess would have been into her second term by this time. Yet based on the new photos of the duchess, there's not even a slight baby bump to her slim frame. 

Fans on Quora discussing the pregnancy rumors about Duchess Kate also observed that her extreme morning sickness hasn't kicked in if she was, indeed, pregnant. The duchess experienced hyperemesis gravidarum in all of her pregnancies. She was confined to bed rest during the first trimester so she was not seen in public during this period.

Yet, in recent months, she has still been seen performing her royal duties and family obligations in public. Thus, some royal observers do not believe the pregnancy rumors despite alleged clues and body language signs.

Meanwhile, Duchess Kate also debuted a new look in this recent outing. The brunette royal now dons a lighter caramel and honey-colored hair that complemented her clothes.

Now, this could once again spark more rumors that she's in the family way. Apparently, Duchess Kate changes up her hairstyle leading to the weeks before the palace makes an official announcement of her pregnancy. Fans observed that this pattern happened when she was pregnant with Princess Charlotte and Prince Louis.

Duchess Kate's choice of pants, on the other hand, is seemingly a nod to her sister-in-law Meghan Markle, the Duchess of Sussex. Jigsaw is one of the brand names included in Duchess Meghan's charity fashion collection Smart Works, which was launched in September. Incidentally, Duchess Kate worked for the clothing label as an accessories buyer some years before she married Prince William.