The Masked Singer fans think they know the identity of Mushroom after a very telling tweet.
Last weekend, Mushroom performed 'Crazy' By Gnarls Barkley.
She smashed the song, with judges Davina McCall, Rita Ora, Jonathan Ross and Mo Gilligan, applauding her voice.
But they were all stumped as to who Mushroom could be.
Among the names suggested were Kimberley Walsh, Carol Vorderman and Lily Allen.
But one fan thinks she has cracked Mushroom's true identity.
Meghan Blake tweeted: "Charlotte Church had her most recent baby in the forest and had a song called Crazy fully convinced she is Mushroom."
The post racked up several likes and one user responded 'totally agree'.
Even actor Michael Sheen tweeted: "OH MY GOD ITS A WELSH DOUBLE HEADER - MUSHROOM IS CHARLOTTE CHURCH!!!"
Mushroom is up against Traffic Cone, Panda, Doughnuts, Robobunny and Rockhopper the penguin.
But the stakes have increased as tonight, two characters will be unmasked.
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