The bigger the village, the more idiots. There are SO many celebrities nowadays. Some of them are complete morons, with no concern for their own safety or the safety of others. They inevitably get a lot of press coverage. It's just sad and pathetic. She needs to get her life together and get her priorities straight. Even Jane Fonda yelled at her!
I don't know about role model, though. I think parents should explain to their kids what a real role model is and help them learn to choose what behaviours/accomplishments really define success to them. It's a good conversation to have with any kid, so you can see where his/her morals and priorities lie. And also, point out to your daughters that these people are acting like idiots, no need to mince words.
Giving your daughter a general threat about what her father might do if there ever happened to be pictures of her getting out of a car sans underwear probably couldn't hurt, either.