No weight issue!
When asked to gain weight for her role as Tiffany Maxwell in Silver Lining Playbook (after slimming down to play Katniss Everdeen in The Hunger games), her response was: “Hell ya!”
She loves Doritos!
Her love of Doritos chips caused her to stain several dresses while on the set of American Hustle(2013), nearly ruining them in the process. The wardrobe department solved this problem by creating a number of identical dresses for her to use throughout the production so she would always have a clean one to wear.