Unlike many child stars-turned-starlets her age, Scarlett Johansson has managed to keep herself from becoming a tabloid mainstay. What’s her secret?

Keeping busybodies out of her beeswax!

How Does Scarlett Maintain Her Privacy: “By not talking about my personal life!” the Iron Man 2 star, 24, reveals in the new issue of Glamour Magazine, on newsstands October 6. “I think that makes a big difference. I go to work, I make movies, I publicize them. I hope people enjoy them. I’m not a relationship expert. I’m not a diet and health expert. I don’t know anything except for movies, other than some Trivial Pursuit kind of information.”

On Sept. 27, Scarlett celebrated her first wedding anniversary with actor hubby Ryan Reynolds, who she married in a secret ceremony in Vancouver, British Columbia.

Scarlett On Marriage: “…It is weird, because I would never ask somebody about their marriage if I didn’t know them. I don’t profess to know anything about marriage that anybody else doesn’t know, or how to make it right. I don’t want to read about somebody who’s giving me relationship advice. So I try to keep some things for myself, to have a private life. Because that’s kind of all you have, really, isn’t it?” she continued. “When it comes down to what separates you from the next person. You don’t go to work and talk about your marriage. Why should I?”

Earlier this year, the normally private star took an uncharacteristic stand against the media’s obsession with body image in an essay for The Huffington Post, where she lashed out at reports suggesting she had undergone a miracle diet to get in shape for her role as The Black Widow in Iron Man.

Scarlett On Weight & Body Image: “I hate seeing these ridiculous articles where [tabloids] guess someone’s weight. But they approach it as fact! I’m sick of it as a woman — not just as a person on the other side of it. As a reader. I got fed up,” she revealed. “I don’t feel the obligation to be a specific weight. I don’t feel like I have to fit into a body that’s not my body. I have the body I have and I try to maintain it.”