THE RULES OF ATTRACTION - BIEL AVOIDS WILD PARTIES AND TAKING RISKS

THE RULES OF ATTRACTION star JESSICA BIEL is so determined to lead a controversy-free life she leaves parties immediately if she suspects drug use or sexual relations are taking place.

The 23-year-old beauty is amazed by how many of her Hollywood contemporaries end up in rehab and so ensures she's never put in any compromising situations.

Biel explains, "If I feel there are too many drugs at a party and people are getting it on in the bedroom, I walk.

"I am not surprised at how many young actors are tempted to wreck their lives and careers. The real surprise is how many avoid it."