The Masked Singer fans lose it over Kyle Sandilands' shock appearance

The Masked Singer Australia's surprise guest appearance on Sunday night left the judges and viewers absolutely floored, after radio shock jock Kyle Sandilands was revealed to be under the Rubble mask.

Performing Train’s Drops of Jupiter in the Paw Patrol costume Kyle was able to fool his on-air partner of more than 20 years Jackie O, who said it was 'embarrassing' she hadn't picked his voice immediately.

jackie o shocked on the masked singer
Jackie O seemingly wasn't able to pick her on-air partner's voice. Photo: Channel 10

"This is the worst you can get, I’m never living this down... this is so embarrassing," she said.

"When you were singing, there was a flash of you in my mind, but then I was like, ‘No.’ You never even let on once. We work together every morning, I‘ve been telling you about Masked Singer every day. All the while, you knew you were gonna be on it!"

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All four judges were stunned by the reveal, with Dannii Minogue screaming "no way!"

Even host Osher Günsberg exclaimed: "Oh my goodness!"

kyle sandilands on the masked singer
Kyle Sandilands shocked everyone on The Masked Singer. Photo: Channel 10

Fans were quick to take to social media afterwards admitting Kyle had been a hard one to pick.

"If there was a Logie for 'Best TV Stitch Up Of The Year' it would be this because Jackie O has just been done up like the proverbial kipper, and it was a work of sublime beauty," one person commended the reveal.

"Never would of guessed but well done Kyle," another said,

"You had everyone fooled," was another comment, while a fourth wrote: "Colour me shocked!"

Although, some fans were convinced Jackie O was actually in "fake shock", with one calling her reaction: "The worst 'I had no idea.'"

The Masked Singer Atlantis revealed

Later on in the night, the celebrity under the Atlantis mask was also revealed to be US soul singer Macy Gray, best-known for her global smash hit 'I Try'.

Macy sang Elle King's 'Ex's and O's', before she was told she would have to remove her mask.

Urzila Carlson was the only judge to come close, having guessed Macy Gray during a previous episode, only to change her final guess to Aussie star Delta Goodrem.

the masked singer star Macy Gray
Macy Gray was revealed under the Atlantis mask. Photo: Channel 10

"I knew it when I heard your voice! I said, ‘That‘s Macy Gray!’" Urzila said after the Grammy-winner removed her mask.

Fans said afterwards Macy Gray should have been an easy guess as "nobody else sounds like her".

"Wow that's a big star to have on. Urzila you should have stuck to your original pick," one viewer commented.

"Congrats to everyone who guessed Macy Gray!" another wrote.

Macy joins Jimmy Barnes' daughter Mahalia, former rugby star Loti Tuqiri, Aussie musician Ben Lee, British star Vinnie Jones, and former MasterChef judge George Calombaris as stars that have now been unmasked.

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