Robbie Williams is apparently worried Justin Bieber could buckle under the pressure of fame.
The Candy singer - who battled drink and drug problems after he rocketed to fame with Take That - fears the 18-year-old Canadian star could find his pop stardom backfiring on him one day, reported The Sun.
Robbie, 39, is quoted talking about finding fame as a teen, and said: "There is a list longer than my arm of f***-ups.
"It's inevitable that someone like Justin Bieber will hit a hard time. You hear about everybody going, 'You're s***'. And you go, 'F***, I'm s***, I'd better go and do something else'. And it gets to you."
Justin has been taking his Believe world tour around the US and Canada, but is currently enjoying a break on the beach with his family before coming to Europe.
Earlier this month he jokingly addressed claims he had smoked marijuana during a sketch on Saturday Night Live.
The star - who has not commented since it was alleged he was snapped smoking a joint at a party in January - guest hosted the programme, and referred to the scandal during a sketch in which he played the president of Miley Cyrus's fan club.
While he was in character, he called Justin "that douche", and said: "I also heard he got busted for smoking weed and that he's really sorry about it and that people make mistakes and that he's never going to do it again."