If you met the Cullens..

What would be the first thing you'd have noticed about each of them?

Edward - His eyes. Just the way he stares at you.
Carlisle - The way his.. beauty mixes with his age. -that doesn't sound like it makes sense- His physical beauty and.. mental age. And how you can see his age in his eyes. (i know, i have problems)
Esme - I'd say her size. She's so small, you don't usually notice because Alice is usually thought of as the tiny one. Oh wait, I take it back, I'd notice Carlisle next to her. Haa.
Alice - Her hair. For sure.
Jasper - His black eyes.
Rosalie - Her beauty. And the way her mouth is always in a hard line.
Emmett - His size. Then his eyes. You know they way his eyebrows and his eyes.. I can't explain it. Or the way his black hair looks against his pale skin.

how pretty and pale they all really are.

Well.....ummm let's see......i know! It would be how amazing they all look. Especially Emmett.