Donny Osmond has told Justin Bieber to "embrace" being a teenager.
The former teen idol, who had a squeaky-clean image, reckons that the Beauty And The Beat singer is rebelling in an attempt to prove that he isn't a kid.
"I'm just a normal guy, and Donny And Marie left me with such a wacky image. Since Puppy Love and Go Away Little Girl were such big records, I went through a period when I hated it," he told Closer Weekly.
"Justin Bieber is feeling the pains of this right now. Everyone thinks he's still the kid who sang Baby, but he's an adult, and he's rebelling to show people he's an adult."
Justin's recent troubles include being accused of spraying graffiti and mistreating the Argentinian flag.
Donny, who is celebrating his 51st year in the industry, advised that Justin should just "let it happen".
"You can't change history. When you hit it so big at such a young age, time freezes in people's minds," he continued.
"You just have to live with the consequences until enough time goes by - 20 or 30 years, in my case. You get to a time when you end up embracing it."