Latest boy band pop stars 5 Seconds of Summer get their rock on with AC/DC, BulletBoys, KISS and Def Leppard!   Australia — Who reading this loves boy bands? That’s what we thought. But oddly, it appears the latest hot boy band sensations just might have a closet hair metal fan in the group – and reading this article right now. Australia’s 5 Seconds of Summer have broke through big time internationally with their 2014 debut single[…]