Fans of TV sensation The Masked Singer reckon the Mushroom has to be Welsh singer-songwriter, Charlotte Church.
When the show aired last night on ITV, the disguised celebrity gave plenty of references to education.
Avid viewers put two and two together and came up with Charlotte, realising she has set up a school in her home, The Mirror reports.
READ MORE: Fans of The Masked Singer UK may have rumbled Robobunny
Twitter lit up with shouts of "It's Charlotte Church!"
One viewer said: "Charlotte Church Is 100% mushroom, she set up a forest school!"
Another Twitter user said: "#TheMaskedSinger mushroom is @charlottechurch", and a third wrote: "Charlotte Church is mushroom."
Another posted: "Defo @charlottechurch as Mushroom! #MaskedSingerUK @MaskedSingerUK"
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The show has masked singers battling it out with their singing talents - before their true identity is revealed as they are unmasked on stage in a wild guessing game.
Last night Mushroom performed as one of eight contestants competing to stay on the show, ahead of the next elimination.
Other contestants appeared as Panda, Poodle, Firework, Doughnuts, Traffic Cone, Rockhopper and Robobunny.
Last week tennis player Pat Cash became the fourth celebrity to be unmasked as it was revealed he was Bagpipes on the show.
The week before Will Young was third to be unveiled after fans correctly worked out he was Lionfish.
TV presenter Gloria Hunniford was unmasked as Snow Leopard in episode two and singer Heather Small was revealed to be Chandelier in the first episode.
The Masked Singer UK airs Saturdays at 7pm on ITV.
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