Jessica Chastain: The Help
To appear curvier as Celia in The Help, Jessica Chastain consumed lots of soy to pack on 15 pounds before filming. Back in August 2011, the vegan actress dished, "Soy helps you become curvy because it has estrogen in it. So what I would do — and this is really gross — is buy cartons of soy ice cream, microwave it, and drink it. It was disgusting, [but] wait [until] you see my boobs in the movie."