Legs and ass. Not really a fetish, but I am borderline OCD on the “quality” of a girl’s pins. Like, I would only consider a girl to be leggy if, in missionary position and her thighs pushed up against her torso, her knees would be touching her chin. My partner’s knees can reach her mouth in this position, i find that a huge turn on.
I also look at her leg shape, straight and thin, with narrow dainty ankles. Perfect legs get me going every time.