I'm sure Rihanna is all about how she is not trying to be a role model to young girls, blah, blah, blah... However the plain hard facts are that these young pop stars are admired, copied and worshipped by young girls just like they have always been throughout the years. So, take Rihanna for example (where she is way over sexualized as it is) and mix in a bunch of crotch rubbing, half naked videos. We "grown-ups" find her to be a simpering whore. The young girls think that's the way to act, look and live.
Her latest video "We Found Love" shows some dude tattooing the word "MINE" on her ass. So, I guess that ass belongs to him. I would have a lot more respect for Rihanna if she had tattooed that word on her own ass herself.