index," jennifer aniston in a revealing, now role, playing a stripper in her new comedy, "we are the millers." I sat down and talked about her about the diet that got her to bare it all. And why... See More
index," jennifer aniston in a revealing, now role, playing a stripper in her new comedy, "we are the millers." I sat down and talked about her about the diet that got her to bare it all. And why she'll never be on twitter. Actress, director, businesswoman, pill philanthropist, she has done it all. Were you up for it from the beginning? I thought, yes. I never played a stripper. And the panic sets in three weeks before, two weeks before, one week before, the actual day of shooting. You can't buy me. I'm not buying you. All right? I'm renting you. Oh. Reporter: Aniston plays rose, a down on her luck stripper, who helps jason sudeikis, who is going over the border, posing as a family. How much did you work out? One hour. But it was the craziest workout. Reporter: You changed your diet, as well? My diet's been pretty clean. But I was super, super strict, in terms of -- it cheat once or twice a week. And I kind of didn't. Reporter: This has heart, with a family-centered theme. That's quite a rig you guys have there, too. Thank you, kindly. David and rose miller here. Did it make you think about what family means to you, in this 21st century? What family means to me, is the family I've chosen. And my friends and my partner are truly my family. Reporter: Her family life is a constant source of speculation. You are on the cover of every magazine, with a different rumor. The wedding's off. I got married in virginia. Reporter: I didn't hear that one. What is it like to be the focus of so many rumors? You just made me sweat saying all of that. Reporter: Is there anything you don't know? I know. I'm not a fan of it. It's not anything I can get comfortable with. So many people, clearly, are so invested in your happiness. How do you center yourself and find zen and find peace with all of that around you? I surround myself with my amazing work. My amazing partner. My beautiful dogs. And I tune that noise out. You know? I think it's very sweet that people want everything for me. I'm so content and so happy where I am. Reporter: That doesn't stop the questions. I asked her which one is most frustrating? Somehow trying to relate a question to a movie. If I was to have a child, how many kids do I want? And then, do I want a boy or a girl? And I didn't realize you could place orders. Like a drive through, that you could talk to a electronic voice. Reporter: And don't expect to see aniston on twitter anytime soon. If I took to twitter or anything, I would send people over the edge. Reporter: What kind of tweets would you put out there? Correcting every false rumor. Reporter: What haven't you done that you want to do? Trapeze. Are you being serious? Kind of. To swing from the trapeze. I know that sounds silly. There's lots of places in the world I haven't traveled. I've never been to india. I've never been to africa. I've been saying it for a while. But I really need to mean it and go and explore. The world.
This transcript has been automatically generated and may not be 100% accurate.