But according to the Insurgent star, getting this thin was something different — and incredibly trying. She revealed:
"Losing all the weight—I've never done anything like that before. I put my body through so much and at first it was really hard to even have a conversation because I was so lightheaded all the time. On top of just being tired, I had to try and perform, so it was very unique experience. I lost like 20 pounds, so I was 90 pounds while we filmed."
90 lbs?? That is dangerously thin, even on Zoë's small frame. And she knows it. She explained her process for trying to keep healthy while shedding the pounds: