Shawn Mendes on Drinking, Kanye and Playing Governors Ball This Weekend

"I'm still really young in terms of being a musician,” saysShawn Mendes, 19. How young is he? Mendes speaks of Justin Bieber as one of hisearliest musical heroes and talks about Kings of Leon like they’re aclassic-rock band. But the pop heartthrob – who broke through five years ago onthe defunct social media app Vine – has released three major-label albums,scoring radio hits like “Stitches” and “Treat You Better.” His new single “InMy Blood&r