Michael Bublé wishes he could be as grounded as One Direction.

He admits to Event Magazine: "They've handled [showbusiness] with far more grace than I have.

"They realise the responsibility they have as role models, and they've handled themselves with dignity and class.

"They're not throwing strops or having attitudes and trying to be too cool for school. Cool is as cool does."

Bublé is also impressed by the maturity of the 1D boys. He said:

"I only wish I could handle myself the same way. I didn't get famous til I was 26 and I still behaved like I was 13 years old."

Bublé also revealed that he used to have "a temper" and was "prone to violence" when he was a child, and that he still has a dark side now that he's older:

"I swear, if I had to tell you under oath who I really am, you'd think I was schizophrenic. But all of us are. I think I'm a kind, generous, gentle soul who's an egotistical, hard f***ing a****** with a temper."

Watch One Direction sing with Michael Bublé below: