Prince William and Kate Middleton
Is Kate Middleton hinting about having a baby boy by wearing blue dresses? Pictured: Prince William and Middleton visit the Princess Ingrid Alexandra Sculpture Park on day 3 of the Duke and Duchess of Cambridge visit to Sweden and Norway on Feb. 1, 2018 in Oslo, Norway. Getty Images/Chris Jackson

Some royal fans are convinced that Kate Middleton is hiding a secret message in her latest fashion choices.

The Duchess of Cambridge has been wearing blue dresses lately. When Middleton graced the stage with Prince William, Meghan Markle and Prince Harry on Wednesday, she donned a blue ensemble. The royal mom-of-two also opted for the same shade when she visited the Royal College of Obstetrician and Gynaecologists on Tuesday.

Entertainment Tonight listed the different events when Middleton sported the regal hue. Since October, Prince William's wife seemed to have a natural inclination to wearing blue dresses.

Middleton took a break from her royal duties after announcing her third pregnancy due to severe morning sickness or hyperemesis gravidarum. The Duchess of Cambridge made her return at the World Mental Health Day reception at Buckingham Palace on Oct. 10 in a blue lacy Temperley London dress.

This had Middleton's fans speculating that the Duke and Duchess of Cambridge are expecting a baby boy.

"Kate Middleton, ya trying to tell us something?" Desiree Murphy of ET wrote on Twitter.

However, Good Housekeeping believes that Middleton is not sending any messages with the color of her dresses. There was also a time when the Duchess sported a pink dress. In addition, the couple did not find out Prince George and Princess Charlotte's gender until after the delivery. The third royal baby will not be an exception.

In related news, there are also rumors that Middleton is expecting a baby girl because her baby bump is "high and wide." When the Duchess of Cambridge was expecting Prince George, her bump was reportedly lower. However, according to Dr. Sherry A. Ross, the mother's baby bump has nothing to do with the baby but more on her body structure.

"Kate Middleton's baby bump has nothing to do with the gender of her third baby with Prince William," Dr. Sherry A. Ross told Sunday Express. "There are no truths to any of these old wives' tales I've come across during my 25 years practicing as an ob-gyn."

According to Dr. Ross, taller women tend to "stick out less and show later than shorter women." Meanwhile, shorter women are more likely to have a low bump.