Viewers who watch The Masked Singer are meant to be blown away when the singer is revealed underneath the bizarre costumes.
Some of the judges are able to guess the artist just by listening to snippets of their voice, while others are a little trickier.
However, no one was expecting who was hiding inside the Gnome costume.
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Dick Van Dyke sang 'When You're Smiling' by Frank Sinatra and the performance was filled with falling balloons and umbrella carrying dancers.
His vocals were just as strong as when he sang in the iconic films Mary Poppins or Chitty Chitty Bang Bang.
It left the audience and judges spellbound.
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Judge Nicole Scherzinger and Robin Thicke thought the singer was Dustin Hoffman, while Jenny McCarthy felt it was Tony Bennett as the Gnome, and Ken Jeong guessed it was Robert De Niro.
Things truly went up a notch when the performer came out of the costume.
Nicole literally cried when she saw the 97-year-old come out of the gnome and people in the audience section went wild.
"I love you so much, we love you, the whole world loves you so much. It's an honor to have you on our show," Nicole said.
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"I can't believe you're here, I'm trying to likeplay it cool. You look so gorgeous, you look so handsome."
She added: "You're our childhood."
The show's host, Nick Cannon, said: "This is the most seasoned and most decorated we've had on our show, ladies and gentlemen."
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He asked Dick what he thought of performing on the show and his answer was very honest.
"It was really dark in there. ...I couldn't see anything," he replied.
He then performed one last time and did the Mary Poppins song 'Supercalifragilisticexpialidocious'.
Van Dyke admitted he had never seen the show when they asked him to be one of the contestants.
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Speaking to Entertainment Weekly, he said: "I looked at it on the air and it looked like fun.
"And I was so positive that nobody would ever guess it was me, that they would have somebody 97 years old on there.
He added: "I would say it's the weirdest thing I've ever done. But they didn't put a mask on me. They made a great big like Pumpkinhead thing that I had to do. It was a weird experience.
"I had two little peepholes I can see the audience with. It's a good thing I'm not claustrophobic."
What an icon and so amazing to see him still wowing audiences at 97.
Topics: Celebrity
Stewart Perrie