Last year, during an outing together, the Princess of Wales reportedly gave her husband, Prince William, a "cold hard stare" interpreted as a "power play signal" by a body language expert. The couple marked St. Patrick's Day with the Irish Guards, which was Kate's inaugural appearance as Colonel of the regiment.

She assumed the role from her husband William, who previously held the position as Colonel of the Irish Guards and now serves as Colonel of the Welsh Guards as the Prince of Wales. During the parade on Friday, Kate took the salute for the first time and also distributed the traditional sprigs of shamrock. According to body language expert Judi James, the couple did appear their normal relaxed selves - but Kate then had to adopt "a more serious look" in her new role as "Colonel Catherine".

And Judi explained this resulted in her shooting the "cold, hard stare" towards her husband - who actually looked on with pride. She told the Express: "She stands fully to attention as she fixes William with what looks like a seriously cold, hard stare. The look shows how seriously Kate is taking her new role.

Her body language is immaculate here and military, rather than royal. "William's response to her stare is a very puckered-looking smile to suggest pride and perhaps a sense of respect for the woman who is taking over his role." It comes as another body language expert also claimed that the princess stood out from the crowd and her husband as she took the reins at the important .