This Morning viewers couldn't help but share their surprise as Hanson appeared on the show. The three brothers, Isaac, Taylor and Zac, shot to fame in the 1990s, and joined Holly Willoughby and Phillip Schofield live in the studio to promote their new music.
The group made their debut 25 years with their worldwide smash MMMBop were just teens when their success began and are now aged 36 to 41 with a whopping 15 kids between them.
Welcoming the trio to the ITV daytime show, Phillip, 60, said: "Get ready to feel just that little bit older. Can you believe it has been 25 years, quarter of a century, since Hanson released this smash hit song..." Holly then gasped as she said: "No, I can't" as the music video to the chart-topping song track, which is currently going viral on TikTok, played.
READ MORE: ITV Good Morning Britain's Susanna Reid stunned at Rob Beckett's dig seconds into chat
After, Holly quipped: "There is no better way to make you feel old is there than when you go 'That was 25 years ago.'" And there was a rather special moment as Phillip and Holly were able to present Hanson with a framed copy of their record as their iconic track hit number one spot in the charts at the time of its release in the UK.
As they reminisced over their career, they said: "One of the things that made it work for us, is that it was our song - it wasn't somebody else's idea." They then explained: "When you're writing your own music, you're thinking about it like 'what will my music be? what will people be getting from that?'"
The popular group are releasing their new album, Red Green Blue, and are set to start touring, kicking off in Finland before returning to the UK at the end of the month. And Hanson even treated the hosts and viewers to a performance of MMMBop - much to their delight.
But it's fair to say fans were more shocked about how the trio have seemingly not changed in all that time - except for all but one of them ditching their blonde locks. @ResidentJobber tweeted: "What have you done with the real Hanson? They can't be that old now, surely #ThisMorning."
@SteveB2Notts echoed: "This isn't Hanson - what have you done with the real Hanson boys? #ThisMorning." @clsyoshimoo commented: "Jesus Christ, I wasn't expecting them looking like this now #ThisMorning." @LHopinion wrote: "Not a wrinkle between them #hanson #ThisMorning."
@1990ELS__ shared: "Since when did the oldest one from Hanson get so good looking... I remember three geeky lads with long hair @thismorning #Hanson #ThisMorning." @JoviGirl_1980 said: "#Hanson as men. I'm not sure how I feel about that #ThisMorning," to which @ChocolateHeroUK replied: "I saw that too, but what shocked me was they have 15 kids between them."
