During her time in Birmingham, she sat with her parents to watch the swimming heats and also watched a hockey match. Charlotte also joined her parents at a SportsAid engagement to learn about a programme preparing the next generation of sportsmen and women for future events.
WATCH: Duchess Kate and Princess Charlotte share a sweet mother-daughter moment
During this appearance, the young Princess revealed that her favourite sport was gymnastics.
She was also able to update the Team England medal table, adding a bronze for the men's table tennis and a silver for the men's lawn bowls.
Tim Lawler, the chief executive of Sports Aid, said: "I did notice the Duke and the Duchess, as we were trying to do, include Charlotte in the conversations – we were very mindful of that and it was really very evident the Duke and Duchess were doing that to, I suppose, include her and reassure her.
Charlotte joined her parents during the Commonwealth Games
"She was charming, very willing to put the medals on the medal board, and she asked the right question, which was, 'Where exactly should I put this?' It was by date and she checked.
"She really, really loved seeing the swimming, but she's interested in the gymnastics, and while they're trying lots of different sports at home, I understand, when I asked her about sport she answered very easily and said, 'It's gymnastics that I like.'"
Charlotte is a keen sports fan and ahead of the Women's Euros final, which took place on Sunday, she and her father wished the Lionesses luck.
The young royal put medals on the medal table
William said: "We both want to wish the Lionesses the best of luck for tonight. You've done amazingly well in the competition and we are rooting for you all the way."
The little Princess, who was cuddled up to her father, added: "Good luck, I hope you win. Bye."
Sweetly, the Lionesses' official social media account posted a blushing emoji as they responded: "Thank you so much!"
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