Viewers of Gogglebox Ireland took to social media to question if they were all seeing the same thing during Wednesday's show.
The episode marked the final one in the current series, with many fans sharing their disappointment that the weekly programme would be taking a break.
However, it was the appearance of an Irish star alongside two fan favourites that really got Gogglebox viewers talking.
People at home couldn't believe it when they spotted Imelda May perched in between Anita and Tracey on the couch.
The well-known singer featured on the episode for a fleeting few moments, leading many viewers to question if it was her.
One person said on Twitter: "Is that Imelda may?? #GoggleboxIRL."
A second said: "Sorry… is no one else just completely thrown by Imelda May suddenly rocking up on #GoggleboxIRL?!"
A third wrote: "Blink and @ImeldaOfficial appears and disappears on #GoggleboxIRL."
While a fourth commented: "How did I not notice Imelda May?! Classic addition! #GoggleboxIRL."
Someone else said: "Out of the blue... poof @ImeldaOfficial #GoggleboxIRL you're just showing off now."
Another viewer stated: "Loving how @imeldamayofficial just casually there on #GoggleboxIRL."
A confused fan said: "Tracey, Anita and Imelda May? #GoggleboxIRL."
While someone who was delighted to spot Imelda May wrote: "That's actual @ImeldaOfficial!!!! On @VirginMediaIE #GoggleboxIRL."
Dominos Ireland even commented, writing: "Imelda May on #goggleboxirl is giving me Poochie vibes."
Gogglebox Ireland, which airs on Virgin Media, will take a break from filming for a few months.
Wednesday's programme saw the stars watch Wild Mountain Thyme, Gwyneth Paltrow's new Netflix series, and the finale of RTE hit show Kin.
