Prince George makes surprise appearance at rugby game with Prince William and Kate Middleton

Like father, like son ...

Royal fans were left delighted over the weekend when Prince George made a surprise appearance with his parents Kate Middleton and Prince William at the Guinness Six Nations Rugby match between England and Wales at Twickenham Stadium in London.

Wearing a red and navy Ralph Lauren polo-style down jacket, dark pants and matching shoes, the eight-year-old was all smiles as he sat between his parents — the patrons of England Rugby and the Welsh Rugby Union, respectively.

Taking to Twitter to comment on the rare surprise appearance from Prince William and Kate's son, fans were quick to note how much George had grown since his last public sighting.

"Great to see them out together again! Prince George is getting so tall!" wrote one fan.

While another quipped: "Prince George looks just like Prince William… they even have the same posture. And he's so tall!"

"Prince George is growing up really fast and seems so much more confident than last time, just adorable!" a third added.

The future king was last spotted in public in July when he made another surprise appearance with his parents at the UEFA Euro 2020 final soccer match between Italy and England at Wembley Stadium in London.

The younger royal children — Princess Charlotte, six, and Prince Louis, three — were not at the match.

He's growing up SO fast!