Madison Beer -- the inimitable, twice-Grammy-nommed pop superstar -- joins the gang to talk about her first experiences on social media, being discovered by Justin Bieber (who, apropos of nothing, was also her first celebrity crush), and the challenges and insights gained from her years in the spotlight. Madison shares the pressures of teenage celebrity, her explosive career growth, and the inspiration behind her new album 'Locket,' out now on Epic Records & Sing It Loud.