The Duke of Cambridge has revealed Prince George is so caught up with the Christmas spirit he has been unwrapping presents before the big day.
William joked about his three-year-old son's involvement with the festive fun when he joined wife Kate and brother Prince Harry at a Christmas party for Heads Together, their mental health umbrella charity organisation.
The event was the royal trio's last official engagement of the year and came after Harry had reportedly said goodbye to girlfriend Meghan Markle on Sunday after they had spent a romantic week together.
William, Kate, who wore a Vanessa Seward outfit, and Harry founded Heads Together to try to combat the stigma around mental health issues and met volunteers, counsellors and supporters of its member charities at a youth club in north Kensington, London.
The Mix, a Heads Together member and national organisation which provides confidential support to the under-25s, hosted the event and also held its end-of-year prize-giving ceremony.
Providing the musical entertainment was Prince's Trust Ambassador, presenter and Kiss FM DJ AJ King, who chatted to William.
The Duke is a big fan of dance tunes but the pair talked about the young Prince, the broadcaster said.
King said: "He just said George definitely knows it's Christmas this year because the presents are about and he's more into opening them than anything else.
"I said Christmas would be a bit different for his children this year and he said they would be having a family Christmas together."
Conversation turned to the love of rugby the two men share and King added: "He was showing me the scar he's got on his finger, which was caused by a rugby accident.
"He had to stop because of his rugby injury - he's got a metal rod in his finger apparently."
William revealed that the accident, believed to be to his left hand, meant he would later also have to give up the boxing lessons he had during his time in the Army.
"He said he would have carried on with the boxing but that injury took him out. He did boxing in the Army, as did his brother," the DJ added.