The Princess of Wales "asserted her authority" over husband Prince William with a bold choice during an annual event, according to a body language expert.
The couple celebrated St Patrick's Day with the Irish Guards last week - the first for Kate in her new role as Colonel of the regiment.
She takes over from husband William, who was the Irish Guards' former Colonel, but now holds the same job with the Welsh Guards as Prince of Wales.
At the parade on Friday, Kate took the salute for the first time and also handed out the customary sprigs of shamrock.
And according to body language expert Darren Stanton, the princess stood out from the crowd and her husband as she took the reins at the important engagement.
Speaking on behalf of Betfair Bingo, he said: "Kate appeared very confident as she exited from the car, while William accompanied her in the vehicle.
"I would definitely say Kate was dressed in her superhero colour, which is usually red, blue or turquoise. It's clear she wanted to stand out from the crowd and assert her authority over William and the other guests.
"She tends to opt for these superhero colours when she wants to be perceived in a powerful way.
"As this was Kate’s first appearance as Colonel of the regiment, she clearly wanted to state her position and make herself known amongst the crowds in the bold colour.
"During the appearance, Kate appeared extremely confident in her posture and stance. She was walking very upright as she was called upon to inspect the guards. Meanwhile, William seemed more reserved in his approach, possibly because he did not want to overshadow his wife.
"I definitely believe Kate was at her strongest during the parade in respect of her levels of confidence. Obviously, William is used to these types of events after being in the army, however, Kate clearly took the engagement in her stride."
However, Darren added that Kate also had an "elegance" and "ease" about her while chatting with the assembled guests.
He explained: "We also saw some really nice moments when Kate was introduced to guests at the event. In order not to tower over them, she leaned right down to meet their eye level. This proves that she is keen on making people feel at ease while talking to them.
"The fact that Kate considered how she would appear from someone else’s point of view speaks volumes.
"In psychology, we refer to this as second positioning, which means she considered someone else’s viewpoint first, as well as her own. This is why Kate is so great at communicating with the public.
"Kate and William have both continued to go from strength to strength in how they conduct themselves in public.
"During their early years in the spotlight, they would often appear nervous and not as confident with their actions. However, they have both developed with elegance and ease over the years."
