Times have changed, and I think that, just like women in the twenties and thirties, and how their wedding dress becomes their "red carpet moment," teenagers' "red carpet" moment now is prom.
In the past, I'm not sure that Hollywood had such a huge influence. Maybe back in the '40s and the '50s, but during the '60s, '70s, '80s and even into the '90s, we weren't quite as fascinated by celebrity dressing. So today, I think that for a lot of teenage girls, it really turns into a question of which actress or singer she loves, and whatever it is that she's wearing.
That said, I don't think that a lot of people in real life have many "red carpet" situations. So you have to understand why people look to celebrities. Where else are they going to get their fashion information? This is their moment to be on display. So, I think that it's a tricky situation, because it's not something that women do everyday, so you don't get better at it. Most people's biggest mistakes are made at night. If you ask most women, "Show me twenty pictures of yourself, and show me ten evening and ten day," chances are her evening pictures are going to be a bigger mistake than her day. Partially because she doesn't do it a lot. I think that prom fashion today is teenage red carpet. That's what it really is.