Let's play small boned, large boned....
This IS fun! I've always thought I would be large-boned and angular at a normal weight, mostly because my shoulders are so square - they go straight out from my neck, no sloping or roundness at all (those few times in my life when my weight has been down that is, otherwise they're completely rounded, LOL). But it turns out I'm small-boned, with a 6" wrist at 5'7' (swear I was 5'8" in my younger days!).