"The first time I walked out in my outfit on set, everyone was like, 'Wow, you're not allowed to wear that!' I've never done anything like this, I'd never felt comfortable enough, and I never thought this would be the project where I'd take a step forward."
She also revealed how she had to embrace her sexuality to effectively portray her role in the film.
"This was all about owning my sexuality. I worked really hard for it in a way that I never had to work hard for something before."
The actress played Carmen Cortez in Robert Rodriguez's Spy Kids movies and will also be seen in Dylan Baker's family film 23 Blast.
Machete Kills comes to theaters September 13th, 2013 and stars Danny Trejo, Mel Gibson, Michelle Rodriguez, Jessica Alba, Amber Heard, Demián Bichir, Sofía Vergara, Charlie Sheen. The film is directed by Robert Rodriguez.