This Morning welcomed two very special guests as Kermit the Frog and Fozzie Bear rustled up some cookies in the studio.

But despite being a childhood hero to so many, 63-year-old Kermit surprised some viewers after his classic voice sounded completely different to what we're used to.

Fans of The Muppet Show took to social media to share their shock at the sudden new baritone that the famous frog's voice had taken on, with one viewer even comparing him to Lewis Hamilton:

This content is imported from Twitter. You may be able to find the same content in another format, or you may be able to find more information, at their web site. Wtf has happened to Kermit’s voice it sounds different #ThisMorning — Cerys Emily ♡ (@Cerys_Emily_x) February 27, 2018

This content is imported from Twitter. You may be able to find the same content in another format, or you may be able to find more information, at their web site. This doesn’t sound like Kermit... 🤔🤔#ThisMorning — Amy Jones (@ammzzz) February 27, 2018

This content is imported from Twitter. You may be able to find the same content in another format, or you may be able to find more information, at their web site. Kermit why? What is that voice? #ThisMorning — Rob (@OmgGrayson) February 27, 2018

This content is imported from Twitter. You may be able to find the same content in another format, or you may be able to find more information, at their web site. WOAH, Kermit!?!? His voice is SOOOOO wrong! #kermit #muppet #thismorning — Sally Sebok (@sally_sebok) February 27, 2018

Jim Henson was the original creator and voice actor for Kermit way back in 1955, then Steve Whitmire took over the role following Henson's death in 1990.

However last year Whitmire was replaced in a surprisingly dramatic turn of events when he was fired for "unacceptable business conduct".

ITV

Whitmire told The Hollywood Reporter: "They felt I had been 'disrespectful' in being outspoken on character issues with the small group of top creative people during the ABC series."

Matt Vogel now voices the beloved muppet, with the new Kermit voice making its debut in August last year.

The duo were appearing on the show to promote their first live UK tour dates, as the whole muppets gang is set to take to the stage in O2 Arena.

Two evening performances and one matinee will take place on Friday, July 13 and Saturday, July 14, with tickets going on sale on Wednesday, February 28 at 9am from AEG's website.

This Morning continues weekdays from 10.30am.

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