This is simply my 2 cents. Nothing I say will change the lives of those stars, and Miley Cyrus will do what she wants to do.
I am the father of 2 girls. As they were growing up, they liked to watch the kind of movies girls like to watch and listen to the music that other girls of their ages were listening to.
Among the artists and stars of the day were Lindsey Lohan who stared in a few movies including "The Parent Trap" which my girls loved..... and Brittany Spears who also started as a Disney star. The girls had a poster on their bedroom wall of Brittany Spears looking totally wholesome in her early singing career days. They loved putting on Brittany's CD's and singing along..... they knew all the words to every song.
We all know the story of both these girl's lives, how they self destructed to arrive in rehab and bankruptcy and the "ash heap" of stardom to where they are now. Hannah Montana was a little later in their lives..... they were in their teen years when Hannah was starting her career in TV and music. There is probably a Hannah Montana CD in their old CD collection somewhere. Due to a few factors, Hannah never became a household name around here. They did watch a few shows on TV and heard her music, but I really don't recall it being a big thing.
What my wife and I decided to do was not so much to prohibit our girls from listen to, and watching these "role models" but we opted to set down and talk to our girls and ask them what they thought about what Lindsey and Brittany were doing, and let them make the decision along with our guidance and recommendations. Most often, our girls chose the correct path. As the songs got more risque, we would steer our girls away from Brittany and offer a better option, a more wholesome choice and it was not too often that the girls would fuss about that. As a result, they learned about other musicians, and their love for music was expanded.
We had quite a few very interesting discussions surrounding the various exploits of these 2 self destructing stars..... the endless line of boyfriends, the car wrecks, the drug rehabs stints, and so much more. We would ask them where they thought Brittany and Lindsey were going wrong. We'd ask them if Brittany and Lindsey were being good role models. Our girls were thinking for themselves and learning with our discussions, removed from the peer pressure of their friends. And yes, we even had a few discussions which included their girl friends because quite often they would have sleepovers and that's when they watched the movies and played the CD's..... We wanted to be involved in their lives and be parents... moms and dads who were there for them. And we wanted them to know and understand that as well.
I guess all of that to say, hands on parenting, being involved in the lives of your children, is without a doubt, the single most important job and responsibility of a parent.
Now my girls are 19 and 21 and out on their own. We and they, know that my wife and I will talk about any topic with them..... no matter what, and will do it in a respectful manner. They learned this fact growing up, in the discussions we had with them. They call me from time to time to ask advice. I offer my thoughts and leave the final decision up to them with no guilt trips. They speak on a daily basis with my wife about "girl things".... shopping trips, decorating ideas, life in general.... I hear laughing and giggling and hope I'm not the topic of discussion.
That's how it is supposed to be.