The actress explained that she has to be very "disciplined" with herself in order to keep her body the way that she wants it.
"If I gain any weight it's always right around my hips, so that area sometimes bugs me, and I wish my legs were longer. I have the same insecurities as every other person."
The 28-year-old also explained what she has to do in order to keep fit.
She said: "This doesn't just happen naturally. I eat very well and that means staying away from sugar, coffee, bread, wheat and gluten - all the fun stuff that everyone wants to eat!
"It's hard and yes, I'm very disciplined. I can keep myself on track for a very long time but I'm not perfect and fall off the wagon every now and again. I try to create a system for myself so that when I'm working I eat well, then I pick a day - maybe Sunday - when I eat whatever I want."
