Smile is good. I first saw the woman I saw for almost four years on IG and was mesmerized by that smile. She had a lower tooth missing, and I noticed that maybe twice in the time we were together -- that's how beautiful her smile was.
Beyond that, it depends. What she's wearing has an effect on my perception. There's a teller at a bank I go to who's maybe 5-4 and 101 pounds (I heard her talking about her weight to someone else). Large As or Bs up top, but they look bigger because she wears tight tops that hug the curves and accentuate her flat stomach. She has a good smile, too.
It might be hair: long, flowing, shiny hair that catches the light just right and makes you want to run it through your fingers and smell it.
It might be a nice pair of jeans that draw attention to her butt and legs. (Lyle Lovett warning: She might be ugly from the front.)
But once she opens her mouth, personality rules, If you'd told me that I, someone who prefers petite Latinas, would be smitten with a woman taller and heavier than I for four years, I'd've said you were crazy. But it happened because she was everything I could ever want in a friend and a woman.. And another bank teller has a really nice, petite body, but she has some facial blemishes. But she's sharp, witty, caring, just good people. I wish I could, I wish I could.