Destiny's Child star Michelle Williams became the latest celebrity to be revealed on The Masked Singer.
Rita Ora, Mo Gilligan, Davina McCall, Jonathan Ross and guest judge Dame Joan Collins were stunned when the performer removed her mask and was shown to be the US star.
The panel had previously guessed Rockhopper to be Fergie, Jamelia and Nicole Scherzinger.
Rockhopper's unmasking means Mushroom, Panda and Robobunny will go through to the grand final of the ITV show.
Here's who else has been unmasked :
Heather Small
Heather Small was the first celebrity to be unmasked.
Disguised as Chandelier, Heather sang Patsy Cline's 'Crazy'.
After she was voted off, Heather said: "I wanted to see if I could, after 30 years of singing, disguise my voice, put on a different persona. And I had that shock of a reveal.
"I didn't make it to the end but I still feel like I won because the panel's reaction was priceless".
Gloria Hunniford
Gloria Hunniford was unmasked as snow leopard in episode two.
Judge Jonathan recognised her voice straight away after she performed 'Big Spender'.
She said: "Only in as much as you are obviously talking about your life and they are things that you have done.
"So yes you do have input but we were trying to put them off the trail quite a lot.
"Jonathan of course, I've met so I wasn’t surprised that he got it quite quickly."
Will Young
Will Young was unmasked in episode three after losing to Firework in the sing-off.
Speaking to Lorraine about the show, Will said: “It was so much fun and, you know, one of the things – and I really mean this – I’m so proud of myself.
“It’s one of the highlights of my career, singing Nessun Dorma, because when would I get the chance to sing classical music on TV?”
Pat Cash
Former Australian tennis player Pat Cash was unveiled as Bagpipes on episode four of The Masked Singer.
The Wimbledon star had attempted a Scottish accent to fool the judges, but Davina McCall rumbled his identity.
After he was unmasked, Pat said: "I just thought it would be so much fun to rock out, although I prefer to hide behind a guitar instead of a sweaty mask.
"It was a great experience overall."
Tom Chaplin
After being unmasked as Poodle, Tom said appearing on the show had been "exhilarating, terrifying and confusing - it has been a total blast".
Tom also explained his wife Natalie was the reason behind his choice of outfit.
He said: "We love this show and she said that if you get offered this show, if you can be a Poodle, you have to do it. She loves Poodles more than human beings."
Speaking about performing anonymously, he added: "On one hand it's quite liberating because you only need to worry about the singing and movement that you make.
"However, you get two minutes and one take to get it right, so it's incredibly stressful pouring all your energy into that short moment."
Jaime Winstone
The actress was revealed to be the celebrity behind the Firework costume.
The 36-year-old described the experience as "trippy, amazing and exhilarating" in an interview after she was unmasked.
She added: "I feel like I'm slightly mind blown by this whole surreal experience."
Michael Owen
The former Liverpool FC striker was unmasked as Doughnut.
He described the experience on the show as "amazing and nerve-wracking".
The 42-year-old added: "I have never been as nervous in my life to do something that you plainly can't do.
"The mask almost gives you superpowers because it takes away some of that nervousness so you can belt it out and be free."
Aled Jones
Aled Jones has been revealed as Traffic Cone on The Masked Singer.
The Walking In The Air singer was unmasked during the semi-final of the ITV show, saying: "Can I go back to being classical and choral now?"
Asked why he wanted to take part he said: "It's so uplifting and when will I ever sing Rick Astley and the Pina Colada song again?"
After he was unmasked, judge Jonathan Ross said: "I'm kicking myself."
Aled had dazzled the panel with his rendition of Escape (The Pina Colada Song) by Rupert Holmes.
Michelle Williams
Destiny's Child singer Michelle Williams left The Masked Singer panel visibly shocked as she was revealed to be Rockhopper on the ITV show.
Rita Ora, Mo Gilligan, Davina McCall, Jonathan Ross and guest judge Dame Joan Collins were stunned when the performer removed her mask and was shown to be the US star.
The panel had previously guessed Rockhopper to be Fergie, Jamelia and Nicole Scherzinger.
Rita told her: "You did so good, you confused the hell out of us."
Michelle said: "There were so many clues you guys were missing, I was under my mask cracking up, thinking 'please don't guess me, please don't guess me'."
Dame Joan, who had guessed Rockhopper was Scherzinger, said: "She was brilliant, gorgeous, you're so exquisite and chic and stylish."
The Masked Singer, which is on ITV and ITV Hub, continues on Saturdays at 7pm.
