What are particular features you look at in an avatar before you gravitate to them? Based entirely on looks, what makes someone intereesting?

I'm not talking about the bases, bodies, and all that. A particular aspect. Do you immediately beeline to the largest pair of titties in the room, or do you like ABS?

For me, I'll usually look for longer hair. Girl, guy, it doesn't matter. Long hair gets my attention real easily.