Jessica Alba on Why She Won't Do Nude Scenes: "I Don't Want My Grandparents to See My Boobs"

Actress reveals she has a nudity clause when making movies

Jessica Alba may be reprising her role as stripper Nancy Callahan in the highly anticipated sequel Sin City: A Dame to Kill For, but don't expect to see too much skin from the star.

That's because the 33-year-old always makes sure to incorporate a nudity clause when filming flicks.

"I don't want my grandparents to see my boobs. That's it," Alba says in the June issue of Glamour. "It would be weird at Christmas. And, I mean, really, if you look at the movies I have done, getting naked would never 'elevate' the picture."

Of course, hearing this doesn't come as too much of a surprise.

After all, Alba shared a similar sentiment when the first Sin City was released back in 2005.

"I don't do nudity. I just don't," she told Elle magazine at the time. "Maybe that makes me a bad actress. Maybe I won't get hired in some things. But I have too much anxiety."

Meanwhile, Sin City: A Dame to Kill For is set to hit theaters on Aug. 22.

Directed by Robert Rodriguez and Frank Miller, the movie also stars original castmembers Bruce Willis, Rosario Dawson and Mickey Rourke.

The film will also feature appearances by Josh Brolin, Alba's good friend Jaime King, Joseph Gordon-Levitt, Eva Green, Ray Liotta and Jeremy Piven.