Shawn Mendes opens up about his new album, ‘Wonder,’ in a new interview with ET’s Katie Krause. The 22-year-old talks about the hardships of fame and what Justin Bieber has taught him – he also reveals why he was fearful about making his new music. And of course, the Canadian singer gets candid about his relationship with Camila Cabello. ‘Wonder’ is out Dec. 4.