The royal mum took over the roles from her brother-in-law, Prince Harry, in 2022.
Shortly after the announcement, Kate took part in a training session with England rugby at Twickenham stadium.
And in June 2023, the Princess also played rugby with England stars Courtney Lawes and Danny Care at Maidenhead Rugby Club as part of her Shaping Us campaign.
Take a look at some of the incredible shots of the Princess in action on the pitch in our gallery...
Kate, wearing a black England rugby top, black sports leggings and trainers, was asked whether she was ready for her session as she was greeted at Twickenham.
The then Duchess of Cambridge replied: "Absolutely. I've got my kit on."
She switched into a pair of rugby boots as she headed onto the pitch.
After her outing, Prince William's cousin and former England rugby star Mike Tindall shared his verdict on Kate's skills with co-hosts Alex Payne and James Haskell on their podcast, The Good, The Bad & The Rugby.
Mike replied: "I text Ellis [Genge] and said, 'Mate, please tell me anything she messed up on' so I could sort of… family WhatsApp group, get to her, and he said, 'No she was actually pretty good, and she was really good at kicking,' and I was like [sighs]. But she has this competitive nature."
"She looked unbelievably natural," agreed Alex.
James said: "When she was announced, I thought amazing because we know she obviously likes her rugby. But the way she caught the ball, the way she jumped in the line-out, the little outside break, she was utterly fantastic, she was really, really, really good. And so I was like amazing, and dual sport, what an amazing ambassador."
Mike added of Kate: "Just imagine, anyone who's ever tried it, getting thrown up in the line-out if you've never done it before is not easy because normally, you'll kick the prop in either the nuts or the face as he's lifting you and she just looked effortless."
Kate is a known sports enthusiast and has attended rugby matches in the UK, as well as the Six Nations tournament in Paris in 2017.
And in a piece for Vanity Fair in 2014, the Duchess' younger sister, Pippa Middleton, wrote about her family's love for the sport: "Rugby was a big thing for our family, and the focal point was international matches, which were often played on Saturday afternoons and were as much social as sporting occasions.
"We'd plan our weekends around the big matches, a quick bite to eat at halftime or lunch on our laps, typically a chicken potpie or something equally cosy and English. If we lost, my dad would be in a state of despair for the rest of the afternoon, as if he'd actually lost the game himself."
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