Bruno Tonioli stunned Strictly Come Dancing fans when he returned to the festive special, which aired on Christmas Day, to sing.
The Italian choreographer, 67, was a judge on the BBC show for 18 years before stepping down from the role due to his Dancing With the Stars commitments.
Fans loved Bruno's witty one-liners when he was on the UK panel and were delighted when he rocked up in the studio on Sunday.
Sporting a diamond-encrusted blazer and white slacks, the star belted out a rousing rendition of Don't Leave Me This Way by The Communards.
Fans couldn't get over how good Bruno sounded, with many taking to Twitter praising his pipes.
One said: "You were superb. What a great number."
While another gushed: "You were incredible! Miss you Bruno, Strictly's not the same without you."
The star quit Strictly after 18 years in May, admitting that flying back and forth between the UK and the US for Dancing With the Stars had become 'too much' for him.
Bruno had been splitting his time between the two shows since 2005 and revealed he 'just couldn't do the 10-hour flights anymore and was done.'
Speaking about his decision to leave the BBC show, he said: "There is no animosity, it was a mutual decision with both of us saying, 'Listen, this is not going to work like it used to'," reported the Daily Mail.
Bruno has been at the heart of the BBC dance show since its 2004 launch.
However, he hadn't been a regular on the panel during the pandemic due to travel restrictions keeping him the US where he was filming DWTS.
Bruno admitted he found his final year on Strictly difficult as the pandemic travel uncertainty meant he could appear only via video-link to give his verdict on the performances during the Sunday night results show.
However, the seasoned performer might now have a new career as a singer.
Bruno went down a storm with Strictly viewers in 2019 when he belted out You're Just Too Good To Be True.
Flanked by backing dancers adorned with feathers, he looked like a pro singing the Andy Williams classic.
Ahead of his performance at Christmas, a source told the Daily Mail : "Bruno loves to sing. He did an opera album called An Italian Romance back in 2016 and who knows, it might turn into a new career for him."
Bruno's judging role on Strictly was taken on by show veteran Anton Du Beke, who applauded his pal in the studio on Christmas Day.
When Anton's place on the panel was confirmed, the professional dancer tweeted excitedly: "Woohooo! This is BRILLIANT news. Everyone knows how much I absolutely love the show and I’m utterly delighted to be continuing as a regular judge."
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