Eyes and legs for me. My eyes, according to others, appear to be different colors (hazel/blue/gray) depending on the color of the shirt I'm wearing. My legs are muscular and pretty perfectly shaped -- I think my mom drilled that into me when I was in my teens; she goes, "put your legs together, and if you have three 'diamonds' (one small one between the thighs, one between the upper calves, and the other between the lower calves), you have perfectly shaped legs." Who knows if that's true, but it's what I'm sticking with.
My upper diamond has all but disappeared as my thighs have become larger and more muscular. :'(