The seven-year-old, who was on her first solo appearance without her brothers, made her parents laugh with her excitement, and at one point giving doting father William a thumbs-up.
As the day wore on, Charlotte grew tired and began to pout and hide her head in her hands.
But despite her fatigue, the young royal remained on her very best behaviour.
Her animated display harked back to a similar appearance from the Duchess of Cambridge, whose series of funny faces also stole the attention of royal watchers.
Kate, the Duchess of Cambridge and Prince William have been warned that they must give up “holidaying like it is a competitive sport”.
This comes after the couple has spent nearly four months off from their royal duties in the last 18 months.
During the 2014 Commonwealth Games, Kate watched the boxing, gymnastics, hockey and swimming competitions and the royal could help but express her emotions.
The Duchess winced, laughed and held her hands tight in suspense as she watched boxing matches and a hockey game at the 2014 Commonwealth Games.
And sitting alongside William, her brother-in-law Prince Harry and Prince Edward, Kate cheered on English boxer Scott Fitzgerald and Azumah Mohammed of Ghana before heading over to the hockey match.
The Duchess wore a strained face during the Wales v Scotland Hockey match at the Glasgow National Hockey Centre.
An avid hockey fan, sporty Kate was hockey captain of her school team, and in 2012 she took part in a training session at the Olympic hockey arena with Team GB athletes.
At the time, she revealed: “The last time I played was 2005, maybe. It feels like I haven’t held a stick for ten years.
“This is going to be so embarrassing. My brain thinks I can do all these wonderful things but my body just doesn’t play ball.”
The royal visitors – who are all sports fans – were spotted in hysterics before gymnasts from across the Commonwealth competed in the men’s and women’s team finals.
Harry was seen pulling a funny face and striking a pose as his red-faced brother looked on and laughed while his sister-in-law chuckled away.
The trio were also seen singing along to the chorus of the Proclaimers’ ‘I’m Gonna Be (500 Miles)’ track between rotations at the Games.
Later, the Duke of Cambridge was spotted stepping in to help his overheating wife as they cheered on a Welsh swimmer.
William repeatedly fanned Kate using her identity card as they watched Jazz Carlin win the 800m freestyle gold medal at Tollcross Swimming Centre.
The Duchess was pictured pulling a silly face as she was cooled down by her husband and a poolside official.
And it appears that their comfort at the Commonwealth Games remains eight years later, with the pair seeming more relaxed and able to “blend more into the background amongst the crowds,” according to a body language expert.
Darren Stanton, a body language expert speaking on behalf of Slingo, described Kate, William and Charlotte’s latest visit to the Games.
He said: “There’s a very clear division in William and Kate’s behaviour when they attend different events.
“If they’re attending as high-profile members of the royal family, such as a charity event or memorial service where they are going to be centre of attention, their demeanour changes compared to when they appear at events such as the Commonwealth Games.
He continued: “For instance, as they brought Charlotte to the Commonwealth Games, Will and Kate were happy to dress down a little.
“Will had his shirt sleeves rolled up, while Kate dressed more comfortably and neutrally.”
He added: “Of course, eyes are still very much on her and William, but being a part of the crowd allows her to lean away from the spotlight, as she’s not officially on duty as such.”
Source: EXPRESS CO UK