The Princess of Wales issued a special message on Saturday morning, in honour of the Rugby League World Cup starting in Australia.
The future Queen, 44, was officially appointed as patron of the Rugby League in 2022, by Queen Elizabeth II, a role Catherine took over from Prince Harry after he stepped back from senior royal duties.
Taking to her joint social media account she shares with her husband, Prince William, Catherine penned: "Wishing the England Men's, Women's and Wheelchair Rugby League teams the very best as they travel to Australia for the Rugby League World Cup.
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"Good luck to all the players, coaches and support staff representing England on the world stage. C."
The words were penned alongside a video published by the Rugby League ahead of the tournament.
Catherine's impressive rugby prowess
It's no secret that Catherine is a high achiever when it comes to sports, the mother of three frequently competing with William when they attend sport-related public outings.
However, Catherine's rugby prowess has been noted by her cousin-in-law and former England Rugby captain Mike Tindall.
Following her new patronage, Catherine, who was then known as the Duchess of Cambridge, undertook a training day at Twickenham Stadium, which garnered praise from the former professional player.
Speaking on his podcast, The Good, The Bad and The Rugby, at the time, Mike said Catherine looked "effortless" on the pitch.
Co-host Alex Payne told Mike and James Haskell: "Well, can I just say something which is 77 caps for your country [James] and 75 caps for your country [Mike], she looks a more natural rugby player than both of you put together."
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.
"The best thing is when it rolls to England and Wales, we get the battle of the Cambridges."