It started out as a festive spoof among members of the Belfast Giants ice hockey team.
But an internet clip of the sportsmen dancing and lip-synching to a Mariah Carey classic has been given the thumbs-up by the diva herself.
The American superstar posted the video clip on Twitter commenting: “The Belfast Giants show off some festive moves in their video of All I Want For Christmas Is You.”
Carey tweeted just a few hours after the clip appeared on a US ice hockey website, watched by millions of sports fans.
Todd Kelman, manager of the Giants, said he had come up with the idea as a fun way of promoting upcoming games.
“It had been a slow week for us with just one game so I thought it would be a bit of fun for us to get together and make this video of the guys lip-synching to Mariah Carey,” he said.
“We got Debbie Maguire, our cheerleaders’ coach, to choreograph the routine and then the guys who do our videos shot it.
“Some of the Giants had never danced before and I think Debbie was a bit shocked at how unco-ordinated they were. But after a few hours practice they looked pretty convincing.”
Todd said there were a few stand-out performers.
“Craig Peacock is pretty good in it,” he said. “But I’d have to single out Mike Hoffman in his elf costume. It’s not every day you get to see a 6ft 5in man dressed as a Christmas elf.”