Prince George, 8, has shown his cheeky side while at the rugby with his parents

The Cambridges went to the rugby this weekend, and while Kate and William tested their new rivalries, the show was stolen by Prince George, 8.

Prince George showed his cheeky side as he poked his tongue out while he and his parents watched England play Wales at Twickenham Stadium, London, on Saturday.

It was the first match mum Kate, Duchess of Cambridge, has attended since becoming patron of the Rugby Football Union (RFU).

And it put her in direct competition with husband Prince William, who has been patron of the Welsh Rugby Union (WRU) since 2016.

George, 8, sat in between his mother and father at the game, The Sun reports.

Prince George, 8, showed his cheeky side. Picture: Adrian Dennis/AFP

Prince William and Kate were seen pointing things out to their oldest son. Picture: David Rogers/Getty Images

Kate, 40, was seen leaning down to talk to him, while both parents were seen to point things out to him.

The young prince was wearing a navy and red jacket, matching his father’s choice of colours, while Kate wore an England scarf over a black and white houndstooth jacket.

Prior to kick-off, the royals were expected to meet Jeff Blackett, president of the RFU, and Gerald Davies, president of the WRU.

The Duchess, known for her love of sport, said earlier this month she was “very proud” to become the RFU’s figurehead, a role that used to belong to Prince Harry.

Kate was seen leaning down to talk to her son. Picture: Adrian Dennis/AFP

Kate recently took over patronage of the Rugby Football Union. Picture: David Rogers/Getty Images

Kate grew up watching England rugby games with her family, and they would plan their weekends around international matches.

At an England training session earlier this month, she laughed when player Ellis Genge asked her about the new rivalry with William and admitted it would “make things interesting”.

Kate said: “Ha, yes, what does that mean? We’re terribly competitive.

“The fact we’re now supporting two different teams is going to make things interesting.”

The Duchess also told of her children’s enthusiasm for rugby, saying George plays the sport at school and three-year-old Louis likes to be in the “middle of everything”.

She is the first member of the royal family to officially receive one of the Duke and Duchess of Sussex’s past royal patronages, which they were stripped of when they stepped down from royal duties and moved to the US.

This story was first published on The Sun and is reproduced here with permission