Severely underweight from his role in "The Machinist", Christian Bale gained 100 pounds to play this role
..... Bale 
gained about 100 pounds total between the Machinist and the costume... [DOC] [TLE] Christian Bale Is Unrecognizable In 'American Hustle' After 43 ... [PAR] Dec 16, 2013 ... Christian Bale is no stranger to altering his appearance for a role.