On Instagram on Sunday, Pernice said: "We did it!! WE ARE THE CHAMPIONS !! after a difficult year."
He added: "It felt amazing to be in the final again doing what I love - and then to win as well was a dream and definitely something I will never forget!"
On Saturday he had addressed his "dear friends in the UK, saying he and his partner could tell where the votes for the show were coming from as it is "all about likes on social media".
Pernice wrote: "We just want to say a massive thank you, because realistically, we couldn't do anything without you.
"We can totally see which part of the votes are coming from the UK and you are being unbelievably amazing."