Jessica Chastain controls her fame.

The 'Zero Dark Thirty' star insists there is a way for Hollywood stars to ''set their own privacy'' in the film industry by keeping a low profile and not attending popular celebrity haunts.

She said: ''In this industry you can set your own privacy. If I go to certain restaurants with my boyfriend I know we're going to get photographed.

''But when the public is involved in your relationship ... they can demand or ask questions because they feel like they have an ownership of it, because you sold it. That means they have a say in your private life.''

And the 39-year-old actress also opened up about what she looks for in each movie role she takes on.

She added to the new issue of C magazine: ''My experience with making movies is that I want to walk away from each role, and each set, having learned something and grown as a person. That's really important for me when choosing a role: What am I going to learn and what am I going to gain from this experience?''

Meanwhile, Jessica previously revealed it was her grandmother who pushed her into acting.

She explained: ''I had a very active imagination, and then my grandma took me to a play. She made it clear that this was a professional theatre company, that this was their job - she wanted me to know that it was a treat So then I saw a little girl on stage and I was like, 'OK, so this is totally my job too! This is what I'm going to do. I'm ready.'

''My poor mum - I was always like, 'Mom, can you take me to LA so I can be in commercials?' I don't think my parents thought that was even a real possibility!''