Prince William isn’t shy about his favorite reality TV show , but it turns out Princess Charlotte and Prince Louis also can’t get enough of The Celebrity Traitors . The Prince of Wales made a surprise appearance on The Graham Norton Show on Friday, October 23, and as well as promoting the upcoming Earthshot Prize ceremony, he chatted about his family’s latest obsession.

“I love it, the family love it,” William said of The Celebrity Traitors , adding, “Charlotte and Louis are obsessed with it. It’s really good telly.” Prince George is currently away at boarding school, but he was reunited with his family for Eton College's half-term break starting Friday—just in time to watch some Traitors with his family.

The Prince of Wales recently teamed up with actor Ross Kemp , who stars on the latest series of the reality show, for a National Emergencies Trust event, and he told Norton a hilarious tidbit about their meeting.

Graham Norton, Prince William, Cate Blanchett, Hannah Waddingham and Robert Irwin are…