Chloë Grace Moretz
Chloë Grace Moretz has also talked about the gender pay gap in Hollywood Mario Anzuoni/Reuters

Chloe Grace Moretz opened up about being fat-shamed at the age of 15 by a male co-star 10 years her senior.

The Hugo star told Variety that the unnamed actor told her that he would never date her in real life because she was "too big" for him. The actor was her onscreen love interest and the incident took place on the sets of their movie, the 20-year-old Kick Ass actress said.

"This guy that was my love interest was like, 'I'd never date you in real life,' and I was like, 'What?' And he was like, 'Yeah, you're too big for me' – as in, my size," she said. "It was one of the only actors that ever made me cry on set."

The fat-shaming incident made it tough for her to work with her co-star but she pushed through to fulfil her commitments on the movie sets. The bad experience made her realise that there are some really nasty people who try to hurt others without any reason, she said.

"You have to kind of forgive and not forget really, but it was just like wow. It was jarring. I look back on it and I was 15, which is really, really dark," she said.

Moretz also discussed the gender pay gap in Hollywood and revealed that she was once forced to "take a backseat" as a female actor.

"Even if you're being paid equally, it's the little things, especially if the male lead is bigger than you. You aren't listened to as much, and you take a backseat," she said.

"[I once missed out on a part] because I'm blonde and there's another blonde in the movie, you can't cast me? That's such a masculine way of looking at things."