'Fifty Shades of Grey' Star Dakota Johnson Not Quite Ready for Fame

— -- Though she studied art in high school, Dakota Johnson figured she'd follow her famous parents into the family business.

"I just assumed that what I would be doing is making films," the 25-year-old actress told Vogue's February issue, "because I grew up around people making films, making art, making music. And being on a film set is the most comforting thing in the world to me. Seeing a catering truck feels like home."

That's because home was mostly wherever her parents, Melanie Griffith and Don Johnson, happened to be filming, and after they split for the second and final time in 1995, it was shuttling between the pair. Dakota Johnson also counted Antonio Banderas as her stepfather, until he split with Griffith last year. And she is a third-generation actress; her grandmother, Tippi Hedren, starred in Alfred Hitchcock's "The Birds" and "Marnie."

Now about to star in one of the year's most anticipated films, "Fifty Shades of Grey," Johnson admitted to Vogue that she's not quite ready for stardom.

"I think about my dwindling anonymity, and that’s really scary because a very large part of me would be perfectly happy living on a ranch in Colorado and having babies and chickens and horses---which I will do anyway," she said.

Still, she said she couldn't pass up the chance to play Anastasia Steele from the best-selling erotic novels.

"I wanted to be involved because it’s so different, and it’s an intense love story," she told the magazine.

Still, she has a hard time wrapping her head around the fact that 100 million people have already viewed the film's trailer.

"I’ve never experienced anything like this; I don’t think anyone has," she said. "It’s terrifying -- and it’s exciting."

One person who saw the trailer but has no plans to see the film is her grandmother.

Walking the red carpet at the Bel Air Film Festival last October to receive a lifetime achievement award from her daughter, Hedren was asked if she would be seeing the film.

"No, no, no, I saw the trailer and I think it's lovely and that's about all I'm going to see," she said. "I'm proud though, I love my grandchildren, they are wonderful."