Michael Buble: I stay sober on tour
Michael Buble has revealed he stays teetotal when he's on tour to ensure he wows his fans with his vocals.
The Canadian singer - who recently got engaged to girlfriend Luisana Lopilato - told the Daily Star he doesn't drink when he's on the road because he wants to be "sharp" for his gigs.
"I stay sober as I want to put on the best show - it is bigger now, so I need to be sharp," said the Hold On singer.
Buble, 34, added that ditching booze on tour is "part of getting older".