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.