I'm an NW20, so yeah, pretty fair. I recently got "Sin" blush, and I'd recommend it for any fair-skinned lovely! It's such a great color. I know a lot of people like Orgasm, but like someone above said, it doesn't do much for me. However, Sin has become a staple in my daily makeup routine.
Also, get a lipgloss! NARS lipglosses are the best! They don't really have a scent to speak of, but the colors are amazing, and they have great lasting power. They're also not sticky! I love NARS lipglosses. Could you tell??
ETA: If you do get Sin blush, a gloss that goes really beautifully with it is Gothika! It's quite possibly my favorite lip/cheek combo ever.