Sam, who will battle it out against Luke Friend and Nicholas McDonald in this weekend's finale, was joined on stage by her mentor Sharon Osbourne for an impromptu sing-along at karaoke!
Kicking off the party, Sharon, who came back from the US to join Sam in her hometown, performed Cher''s 1990 hit, 'The Shoop Shoop Song (It's in His Kiss)'.
After some karaoke fun, Sharon then jumped behind the bar to serve some lucky punters!
Former prison guard Sam, told Reveal earlier this month that she would not be returning to her job once the show finishes.
"I'm definitely going to pursue a career in singing now," she told us. "The prison service has probably got a good idea that I won't be going back."
Sam was greeted by hundreds of fans upon returning home, as well as her two children Brooke and Tommy, and her husband Craig.
Sam, who will duet with Nicole Scherzinger in the finals, spent some quality time with her family first before greeting fans.
All three finalists - Sam, Luke and Nicholas - are now gearing up for the final live shows on Saturday and Sunday at Wembley Arena. Even though Sharon mentors Sam, the judge also offered advice to Luke earlier this week, after he found himself in the bottom two during the semi-finals.
After being saved by the public vote, Luke told Reveal that it was "devastating" to have been in the bottom two again.
But since, Sharon has sent a sweet message of support to Luke. She said on Twitter (10 December): "Dearest @LukeFriendMusic, wanted to check in to see if you are OK. I know Sunday was an emotional roller coaster. Stay focused, stay strong."
Watch a video of the final three finding out about their duets for the final: