What can I do about my fear of Aging and getting old. Its ruining my life!?

I'm a very young good looking guy. I never used to think about aging too much until I met my Girlfriend and my best friend (another good looking guy like me) who are both extremely good looking, Abercrombie & Fitch models (and we're also trying to get into the Acting business here in Los Angeles). And they're just total health fanatics and so damn vain and they just demonize aging. I've found myself becoming more and more like them and I honestly fear aging to death too now. What can I possibly do? I'm so afraid of getting old. I feel like old is ugly and I don't ever want to be ugly! I need to find some way to not ever get old.