Why are the Hills girls on the cover of Rolling Stone?

This is so not cool. I thought the cover of Rolling Stones was for either a) Great musicians or b)influential celebrities. The Hills girls are neither of the two. How can people say they are celebrities when they actually don't DO much for their 'craft'. I mean, either admit that you're actors or admit that you're Reality stars, don't go around getting credit for both. I don't think any other reality stars would be on the cover of Rolling Stone. Except maybe an (insert country) Idol. And only if they were really lucky or really talented.