The 31-year-old actor also opened up to ET about his surprise cameo in 'Deadpool 2' and revealed the adorable reason why he loves working with fiancee Emma Roberts.
The crime drama stars Peters, Jenner and Barry Keoghan as a group of friends who attempt to pull off one of the most audacious art heists in U.S. history. 'American Animals' opens in theaters on June 1.
