Myself, I was born, and married into priorities and common sense.
I never considered designer things in college. Only once I was out of school, working ridiculously hard, having saved, taken care of myself and my future path, did I ever wander into designer departments. At all! And even then, I was closer to thirty. Oh, I dressed well (I went to art school too) and took care of myself, but I barely considered Coach, much less Hermes. But you know what I did do?
I traveled. I took my discretionary money, and I did and saw great things. I explored! Now, a bit older, settled into a life, family, and career, it isn't so easy to see the world now but I feel like I already did, and I discovered myself along the way.
Before you find Hermes, Chanel, and the rest, find yourself. And don't stop looking until you and your soul are dear old friends. Then, find a career. And a guy. A home. A family.
Somewhere along the way. Hermes or Chanel... or Jimmy Choo, whatever... will find YOU. At 18, you're in no rush. Take life for what it's worth! And what it's worth to you is priceless.
Curiosity is good - use it to discover new countries, religions, art and beauty. Trust me, you'll see yourself, and what you want to do... along the way.